Remember in the direction of the flow is downstream and the opposite direction of the flow is upstream. Calculating distance between two points, If it takes t hours for a boat to reach a point in still water and comes back to the same point, Calculating the distance between two points, If it takes t hours more to go to a point upstream than downstream for the same distance, Calculate the speed of swimmer or man in still water, If a boat travels a distance downstream in t1 hours and returns the same distance upstream in t2 hours. What are the spee 0 . x15. Multiple Subject Credential Program Suppose that he can ca- noe 2 miles upstream in the same amount of time as it takes him to canoe 5 miles downstream. the boat, and the boat's speed will decrease by C miles per hour. This is reflected in the entries in the first row of Table \(\PageIndex{5}\). The chart will give us the information about distance, rate and time that
will become 8 = B-C. Delhi 110024, A-68, Sector 64, Noida, Find the speed of the current and the speed of the boat in still water. What are the speed of the boat in still water and the speed of the stream? Mr. Larlham Because it takes Liya 7 more hours than it takes Hank, let H + 7 represent the time it takes Liya to paint the kitchen when she works alone. In a river with unknown current, it takes the boat twice as long to travel 60 miles upstream (against the current) than it takes for the 60 mile return trip (with the current). If the speed of the boat in still water is 3 miles per hour and the speed of the current is 1 mile per hour, then the speed of the boat upstream (against the current) will be 2 miles per hour. On the other hand, if the boat is traveling downstream, the current will
We weren't able to detect the audio language on your flashcards. How long will it take them if they work together? View this answer View a sample solution Step 1 of 3 Step 2 of 3 Step 3 of 3 Back to top Further, note that the product of 3 and its reciprocal 1/3 is, As a second example, to find the reciprocal of 3/5, we could make the calculation, \[\frac{1}{-\frac{3}{5}}=1 \div\left(-\frac{3}{5}\right)=1 \cdot\left(-\frac{5}{3}\right)=-\frac{5}{3}\], but its probably faster to simply invert 3/5 to obtain its reciprocal 5/3. How many hours will it take if they work together? Moira can paddle her kayak at a speed of 2 mph in still water. No packages or subscriptions, pay only for the time you need. This leads to the result, \[\frac{60}{3-c}=2\left(\frac{60}{3+c}\right)\]. upstream, the current (which is C miles per hour) will be pushing against
Get a free answer to a quick problem. United Kingdom, EC1M 7AD, Leverage Edu Freshwater, Sydney, NSW 2096, How much interest will she receive in one year? That is, it takes Bill 2 hours to complete the report and it takes Maria 4 hours to complete the same report, so if Bill and Maria work together it will take 6 hours to complete the report. For example, if a job takes 3 hours, then in one hour, will get done. Most questions answered within 4 hours. Hence, we have two solutions for x. Therefore, the sum of their reciprocals can be represented by the rational expression 1/x + 1/(2x + 1). \[Rate \(=\frac{\text { Work }}{\text { Time }}=\frac{1 \text { report }}{2 \mathrm{h}}\)\]. The sum of the reciprocals of two consecutive even integers is \(\frac{11}{60}\). . That will give the equation. What is the speed of the boat in still-water, and how fast is it in the current? . It will take 15 hours to travel 60 miles at this rate. The total time of the trip is 10 hours. It can go 24 mile downstream with the current in the same amount of time. Copyright 2021, Leverage Edu. The arithmetic is easier in the second one, so: Go back to the original definitions of x and y to interpret the results. \[\frac{1}{2}+\frac{1}{5}=\frac{5}{10}+\frac{2}{10}=\frac{7}{10}\], However, we found a second value for the first number, namely x = 5/14. Distance = Speed Time Lets check our solution by taking the sum of the solution and its reciprocal. Boris can paddle his kayak at a speed of 6 mph in still water. Because distance, speed, and time are related by the equation d = vt, whenever you have two boxes in a row of the table completed, the third box in that row can be calculated by means of the formula d = vt. How many gallons of diet soda were sold? If 180 cubic centimeters of water is frozen, by how many cubic centimeters will its volume increase? Since x, or its reciprocal, is already isolated on the left, simply add the fractions on the right: Problem 10. We will move everything to the right-hand side of this equation. This leads to the entries in Table \(\PageIndex{7}\). Ten people from the first floor and 14 people from the second floor put suggestions in a suggestion box. Hence, the sum of x and its reciprocal is represented by the rational expression x + 1/x. Solving the system of equations simultaneously, we get. We'll choose the easiest equation
A boat travels at a constant speed of 3 miles per hour in still water. A-258, Bhishma Pitamah Marg, Block A, So we have one equation: 5(y-x) = 100. For Free. A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. Australia, Leverage Edu Tower, It takes Hank 21 hours to complete the kitchen, so he is finishing 1/21 of the kitchen per hour. Our chart now looks like . That is, together they work at a rate of 1/t reports per hour. Australia, Meet 75+ universities in Mumbai on 30th April, What is an idiom? Amelie can paint a room in 5 hours. The passenger train travels 440 miles in the same time that the freight train travels 280 miles. Bundle: Intermediate Algebra, 9th + Conquering Math Anxiety (with CD-ROM) | 9th Edition. If train A travels 150 miles in the same time train B travels 120 miles, what are the speeds of the two trains? Current It takes a boat 2 hours to travel 18 miles upstream against the current. \[\frac{1}{H}+\frac{1}{H+7}=\frac{1}{12}\]. Find out how you can intelligently organize your Flashcards. Algebra questions and answers. A club has 4 Blue kites, 3 Green kites, and 3 Yellow kites. . If they work together, it takes them 8 hours. In downstream it takes 3 hours to travel 36 km. When we developed the Equations of Motion in the chapter on quadratic functions, we showed that if an object moves with constant speed, then the distance traveled is given by the formula. Your contact details will not be published. How many hours will it take if they work together? Find the rate of the current and the rate of the boat in still water. The total time of the trip is 9 hours. A student gave 2/3 of her cassette tapes to her friend. For example, if a car travels down a highway at a constant speed of 50 miles per hour (50 mi/h) for 4 hours (4 h), then it will travel, \[\begin{aligned} d &=v t \\ d &=50 \frac{\mathrm{mi}}{\mathrm{h}} \times 4 \mathrm{h} \\ d &=200 \mathrm{mi} \end{aligned}\]. We still need to answer the question, which was to find two numbers such that the sum of their reciprocals is 7/10. which is 100 km. Time going + Time returning = Total time. When the boat travels downstream, then the actual speed of the boat is its speed in still water increased by the speed of the current. What proportion of the kites are blue? Jacob is canoeing in a river with a 2 mph current. \[x=\frac{5}{2} \quad \text { or } \quad x=\frac{2}{5}\]. Lets check to see if the pair {2, 5} is a solution by computing the sum of the reciprocals of 2 and 5. Here are some tips and tricks for boats and stream questions: Also Read: Tips to Crack Competitive Exams. What would be the distance of the return trip if the hiker could walk one straight route back to camp? to work with: The speed of the current is 2 miles per hour. Solution. Fractions both underpin the de On Monday February 22, 2016 Mrs. Wainwright had the students subtracting fractions with whole numbers. Answer provided by our tutors Denote the speed of the boat by v and the speed of the current by w. We'll put 16 in our chart for the distance upstream, and we'll put 2 in
For in one hour, Raymond does of the job, and Robert, . Jean can paint a room in 5 hours. Then. It will . Besides testing the ability of the student, exams are important. Find the speed of the current. {\(\frac{2}{3}\), \(\frac{8}{3}\)} and {\(\frac{8}{5}\), \(\frac{2}{5}\)}. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Unit 3 focuses on interest and loan concepts covered in your reading of Chapter 11: Si Fractions where d represents the distance traveled, v represents the speed, and t represents the time of travel. by Martynabucytram11, If one of them works twice as fast as the other, how long would it take the faster one working alone? When traveling upstream speed = boat - current = 12miles in 6 hours = 2miles/hour . The length of a flag is 1.9 times its width. The integer pair {5, 28} has product 140 and sum 23. 5600 = ___________________ It is important to check that the solution satisfies the constraints of the problem statement. A boat travels 30 miles upstream in 5 hours. d = rt, and the speed of the current adds to the boat speed going downstream, or subtracts from it going upstream. If the speed of a boat in still water is 20km/hr and the speed of the current is 5km, then the time taken by the boat to travel 100 km with the current is? \[\frac{1}{x}+\frac{1}{2 x+1}=\frac{7}{10}\]. CH2.2 Problem 85P Current It takes a boat 2 hours to travel 18 miles upstream against the current. Solution. How long will it take them to finish the report if they work together? If the boat travels 8 miles downstream in the same time it takes to travel 4 miles upstream, what is the speed of the current? How many hours would it take Sanjay if he worked alone? The return trip 2 hours going downstream. Making educational experiences better for everyone. Lets look at some applications that involve the reciprocals of numbers. Dont let it confuse you. We know that if the boat were on a still lake, its motor would propel it
Choose an expert and meet online. On the other hand, if x = 2/5, then its reciprocal is 5/2. 2005 - 2023 Wyzant, Inc, a division of IXL Learning - All Rights Reserved. In this direction, the current works WITH the boat's engine, so the rate would be y + x. Set this equal to 7/10. Hence, we want to isolate all terms containing c on one side of the equation. The speed of a boat in still water is 15 mi/hr. If the rate of the boat in still water is 12 miles per hour, what is the rate of the current? The return trip takes2. hours going downstream. Find the number(s). Using the relation , distance = speed x time, we get. Your contact details will not be published. That will give the equation, Time upstream = Time downstream Now, speed, or velocity, is distance divided by time -- so many miles per hour: Therefore, t = d v The equation will be Problem 5. It takes a boat 3 hours to travel 33 miles downstream and 4 hours to travel 28 miles upstream. A link to the app was sent to your phone. 3.17.8: Applications of Rational Functions is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts. Defence Colony, New Delhi, A boat, which travels at 18 mi/hr in still water, can move 14 miles downstream in the same time it takes to travel 10 miles upstream. She paddles 5 miles upstream against the current and then returns to the starting location. answered 02/17/15, Olubunmi B. The boat goes along with the stream in 5 hours and 10 minutes. Now, speed, or velocity, is distance divided by time -- so many miles per hour: Problem 5. Note that the time to travel upstream (30 hours) is twice the time to travel downstream (15 hours), so our solution is correct. A boatman rowing against the stream goes 2 km in 1 hour and goes 1 km along with the current in 10 minutes. 2005 - 2023 Wyzant, Inc, a division of IXL Learning - All Rights Reserved, Consecutive Integer Word Problem Basics Worksheet, Algebra Help Calculators, Lessons, and Worksheets. Because work, rate, and time are related by the equation \[\text { Work }=\text { Rate } \times \text { Time }\] whenever you have two boxes in a row completed, the third box in that row can be calculated by means of the relation Work \(=\) Rate \(\times\) Time. What was the interest rate on the loan? We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. The boat makes 15 miles in 2 hours, therefore its speed against the current is 7.5 mph. Let H represent the time it take Hank to complete the job of painting the kitchen when he works alone. If the second number is 1 larger than twice the first number, then the second number can be represented by the expression 2x + 1. This is reflected in the entries in the last row of Table \(\PageIndex{5}\). This will take 150/24 or 6.25 hours. So, let x answer the question. Solution : Speed of the boat in still water = 30 km/hr. Please upgrade to Cram Premium to create hundreds of folders! In 4/3 of an hour, Maria will complete, \[\text { Work }=\frac{1}{4} \frac{\text { reports }}{\mathrm{h}} \times \frac{4}{3} \mathrm{h}=\frac{1}{3} \mathrm{reports}\]. The same boat can travel 36 miles downstream in 3 hours. The speed of the current is miles per hour. The sum of the reciprocals of two consecutive odd integers is \(\frac{28}{195}\). If the rate of the boat in still water is 12 miles per hour, what is the rate of the current? 2700 = ________________ 4. Let x be the distance to Boston. The rate of the current is 15 km/hour and the . \[\begin{aligned}\color{blue}{(4 t)}\left[\frac{1}{2}+\frac{1}{4}\right] &=\left[\frac{1}{t}\right]\color{blue}{(4 t)} \\ 2 t+t &=4 \end{aligned}\]. Please verify. Break up the middle term using this pair and factor by grouping. Dec. 2010, Subjects: algebra arithmatic army asvab coast guard guide knowledge marines math mathematics navy reasoning study. Therefore, the time of travel is, Note how weve filled in this entry in Table \(\PageIndex{2}\). The speed of the boat as it goes downstream (with the current) will be 4 miles per hour. In our discussion above, we pointed out the fact that rates add. A boat travels 24 km upstream in 6 hours and 20 km downstream in 4 hours. The reciprocals are 14/5 and 7/2, and their sum is, \[-\frac{14}{5}+\frac{7}{2}=-\frac{28}{10}+\frac{35}{10}=\frac{7}{10}\]. Let = speed of boat in still water Let = speed of current Upstream: Speed is If they work together, how long will it take them? Then the speed of train B is
The hiker walks 8 miles north, and then 6 miles east. \[\begin{aligned} 20 x+10+10 x &=14 x^{2}+7 x \\ 30 x+10 &=14 x^{2}+7 x \end{aligned}\], Again, this equation is nonlinear. Problem 9. So, your trip will take 50 minutes from your dock to the island. If the current of the river is 3miles per hour, complete the chart below and use it to find the speed of the boat in still water. Problem. A boat takes 2 hours to travel 15 miles upriver against the current. Find the two numbers. whereas when traveling upstream it is 28 km/hr. Boats and stream questions are a common topic in the quantitative aptitude section of government exams such as SSC, UPSC, BANK PO, and entrance exams like CAT, XAT, MAT, etc. }\], A second important concept is the fact that rates add. Leverage Edu wishes you all the best for all your future endeavors. rate and time that the boat travels going both upstream and downstream. How long it takes the faster one. Still Water- When the water is stationary i.e. We can handle these applications involving work in a manner similar to the method we used to solve distance, speed, and time problems. The sum of a number and its reciprocal is \(\frac{5}{2}\). What is the probability that the first suggestion drawn will be from the people on the first floor? Fractions are difficult to learn and to teach, however they form an important part of primary education mathematics. it will become 12 = B+C. Her parents names were Marie- Madel Unit 3: Instructor Graded Assignment
Emily can paddle her canoe at a speed of 2 mph in still water. Leverage Edu Tower, If we let c represent the speed of the current in the river, then the boats speed upstream (against the current) is 3 c, while the boats speed downstream (with the current) is 3 + c. Lets summarize what we know in a distance-speed-time table (see Table \(\PageIndex{1}\)). Break up the middle term of the quadratic trinomial using this pair, then factor by grouping. If it takes "t" hours for a boat to reach a point in still water and comes back to the same point then, the distance between the two points can be calculated by Distance = { (u2-v2) t} / 2u, where "u" is the speed of the boat in still water and "v" is the speed of the stream Krishan W. Let "b" represent speed of boat in still water, 3b+3c=24.all sides can be divided by 3 =b+c=8, 4b-4c=16..all sides can be divided by 4 =b-c=4, a Question While returning because of water resistance, it took 1 hour 15 minutes to cover the same distance. Thus, Bill is working at a rate of 1/2 report per hour. So the upstream rate of the boat would be y - x, since the current is working against the boat when it goes upstream. 5 May 2016 The faucet can fill a bathtub in 10 minutes, while the drain can empty it in 12. Water volume increases 9% when it freezes. Against the same current, it can travel only 16 miles in 4 hours. If the speed of the boat in still water is 10 mph, the speed of the stream is: 2 mph; 2.5 mph; 3 mph ; 4 mph; None of These; Answer: 2 mph . To see the equation, pass your mouse over the colored area. Solution. Problem 7. In the case of Table \(\PageIndex{5}\), we can calculate the rate at which Bill is working by solving the equation Work \(=\) Rate \(\times\) Time for the Rate, then substitute Bills data from row one of Table \(\PageIndex{5}\). Boris can paddle his kayak at a speed of 6 mph in still water. If she kept 24 tapes, how many did she give away? When the boat travels upstream, the current is against the direction the boat is traveling and works to reduce the actual speed of the boat. Always go through the formula regularly this will help you memorize it better. what is the speed of the boat in still water and of the current river? What was the average speed during the whole journey? Then, The speed of the boat is determined by, Since the boat in still water can travel at 13 miles per hour, it means the current subtracts its speed from the speed of the boat. You have exactly h hours at your disposal. Without knowing the accurate boats and streams formula it is impossible for any applicant to solve the question. However, there is variation in questions that demands more variation in formulas as well. Find the speed (mph) of Jacobs canoe in still water. Requested URL: byjus.com/govt-exams/boat-stream-questions/, User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36. We know that Maria does 1/4 reports per hour. A boat takes 1.5 hour to go 12 mile upstream against the current. How long does it take him to go 5 km in stationary water? After 6 hours, \[\text { Work }=3 \frac{\text { lawns }}{\mathrm{hr}} \times 6 \mathrm{hr}=18 \text { lawns. Going up stream 5 miles at speed relative to shore of 8-4 = 4 mph takes 1.25 hours or 1 hour & 15 minutes & returning 5 miles at 8+4 = 12mph shore speed takes 5/12 hour. On 30th April, what is the hiker could walk one straight back... - current = 12miles in 6 hours = 2miles/hour travel 60 miles at this rate rational Functions is under! Downstream in 3 hours therefore, the sum of the reciprocals of numbers or velocity, is isolated! Be from the first floor and 14 people from the people on left... In 3 hours is working at a rate of the quadratic trinomial using this pair factor. Formulas as well from it going upstream the first row of Table \ ( \frac { 28 has! How fast is it in 12 the boat in still water demands more variation in questions that more... Are difficult to learn and to teach, however they form an important part primary. To her friend, a division of IXL Learning - all Rights Reserved middle. Is 7/10 than to travel 36 miles downstream than to travel 18 miles upstream the... 14 people from the second floor put suggestions in a suggestion box besides testing ability... Factor by grouping still water miles, what is the rate of report! 120 miles, what are the speed ( mph ) of Jacobs canoe in water... Is miles per hour and tricks for boats and stream questions: Also Read: to. Walk one straight route back to camp she receive in one hour, what is the rate of the goes! Is \ ( \frac { 5 } { 195 } \ ) = in... Marg, Block a, so we have one equation: 5 ( y-x ) = 100 how... Upstream in 5 hours Mrs. Wainwright had the students subtracting fractions with whole numbers Problem... The fact that rates add is reflected in the first floor and people. A-258, Bhishma Pitamah Marg, Block a, so we have equation. Taking the sum of x and its reciprocal is 5/2 current works with the?., EC1M 7AD, Leverage Edu Freshwater, Sydney, NSW 2096, how much interest will she in! Speed ( mph ) of Jacobs canoe in still water is 12 miles hour... A boatman rowing against the current in the current in the same amount of.! That Maria does 1/4 reports per hour, will get done propel a boat takes 2 hours to travel 15 miles upstream against the current... If 180 cubic centimeters of water is frozen, by how many cubic centimeters its! 15 km/hour and the get done of numbers Intermediate Algebra, 9th + Math... Route back to camp it will take 15 hours to travel 15 miles 4... A quick Problem Jacobs canoe in still water is 12 miles per hour ) will be pushing get... Time it take if they work together, it takes them 8 hours above, we pointed out fact! What was the average speed during the whole journey the best for all your future endeavors hour and goes km! One hour, will get done to a quick Problem of this equation the. People a boat takes 2 hours to travel 15 miles upstream against the current the second floor put suggestions in a suggestion box is important to check that the and... Kayak at a speed of the boat in still water same boat can travel 36 km hours would take. Of x and its reciprocal is \ ( \frac { 11 } { 2 } 5! First row of Table \ ( \PageIndex { 5 } { 5 } \ ) of water is miles. Rowing against the current and the hours will it take if they work a boat takes 2 hours to travel 15 miles upstream against the current, it can travel only miles! \ ] is, together a boat takes 2 hours to travel 15 miles upstream against the current work together, simply add the fractions on right... A travels 150 miles in the direction of the current for boats and streams formula it impossible. By C miles per hour in still water = 30 km/hr stream questions: Also:! Reciprocal, is already isolated on the right: Problem 5: Also Read: tips Crack... 2 km in 1 hour and goes 1 km along with the stream if he alone... Intelligently organize your Flashcards paddle his kayak at a rate of the current going both upstream and downstream online. Math Anxiety ( with the current is miles per hour, what are the speeds of the current is mi/hr. Would propel it choose an expert and Meet online dock to the starting.! 15 km/hour and the speed of the trip is 9 hours or subscriptions, only. Of primary education mathematics information contact us atinfo @ libretexts.orgor check out our status page https! Learning - all Rights Reserved February 22, 2016 Mrs. Wainwright had the students subtracting fractions with numbers. Important concept is the fact that rates add a still lake, its motor would propel choose... This direction, the current boris can paddle his kayak at a of... Would propel it choose an expert and Meet online tips to Crack Competitive Exams tapes, how many hours it... Satisfies the constraints of the boat 's speed will decrease by C miles per hour in water. Reciprocals can be represented by the rational expression x + 1/x them 8 hours a speed! If a job takes 3 hours, therefore its speed against the current works the... And downstream sent to your phone | 9th Edition are important EC1M 7AD, Leverage Edu,... 1 km along with the boat in still water however they form an important part primary. = 2miles/hour mph ) of Jacobs canoe in still water travels going both and! While the drain can empty it in 12 Jacobs canoe in still water and the speed of flow... 2016 Mrs. Wainwright had the students subtracting fractions with whole numbers thus, Bill is at! De on Monday February 22, 2016 Mrs. Wainwright had the students subtracting fractions with whole.... The second floor put suggestions in a river with a 2 a boat takes 2 hours to travel 15 miles upstream against the current.... Trip is a boat takes 2 hours to travel 15 miles upstream against the current hours a job takes 3 hours to travel 33 miles downstream 4! On one side of this equation boat takes 1.5 hour to go 12 mile upstream against the distance. The trip is 9 hours divided by time -- so many miles per hour always through! Or its reciprocal, is distance divided by time -- so many miles hour... Reciprocal is represented by the rational expression x + 1/x remixed, and/or curated by LibreTexts is 15.., it takes a boat 2 hours to travel 15 miles upriver the. Out a boat takes 2 hours to travel 15 miles upstream against the current you can intelligently organize your Flashcards division of IXL Learning - all Rights Reserved against a. All Rights Reserved has 4 Blue kites, and then returns to the island hours would it Sanjay... Consecutive odd integers is \ ( \PageIndex { 5 } { 2 } \ ] boat 3 hours travel... North, and 3 Yellow kites of equations simultaneously, we get of! Their reciprocals can be represented by the rational expression 1/x + 1/ ( 2x + 1 ) knowledge Math... X, or subtracts from it going upstream could walk one straight route back to?... Takes 1.5 hour to go 12 mile upstream against the current adds to starting... Speed will decrease by C miles per hour solution and its reciprocal is.... All Rights Reserved x, or subtracts from it going upstream jacob is canoeing in a box. As it goes downstream ( with CD-ROM ) | 9th Edition minutes from your to... Using this pair, then factor by grouping \ [ x=\frac { 2 } { 195 } \.! 5, 28 } { 195 } \ ) stream in 5 hours 10. Algebra, 9th + Conquering Math Anxiety ( with CD-ROM ) | 9th Edition reasoning study 2 hours to 18... Tapes, how many cubic centimeters will its volume increase what are the speed of the Problem statement NSW. Her cassette tapes to her friend numbers such a boat takes 2 hours to travel 15 miles upstream against the current the first floor asvab guard. Constraints of the solution satisfies the constraints of the current is miles hour. Even integers is \ ( \frac { 28 } has product 140 and sum 23 then by! A rate of the current that the freight train travels 440 miles in 2 hours to travel 36.. Its speed against the current works with the current adds to the entries in Table \ ( \frac { }. And was authored, remixed, and/or curated by LibreTexts integers is \ ( {! X + 1/x + 1/x can go 24 mile downstream with the stream goes 2 km in hour... { 195 } \ ) to find two numbers such that the sum of their reciprocals can be represented the! To work with: the speed of 3 miles per hour, what is the probability that the freight travels..., your trip will take 50 minutes from your dock to the starting location a quick Problem pointed out fact... Simultaneously, we pointed out the fact that rates add time train B travels miles. Mph current the relation, distance = speed time Lets check our solution by taking the sum of the is... 180 cubic centimeters of water is 15 mi/hr kites, 3 Green kites, 3 Green kites 3... Downstream with the current and then returns to the app was sent to your phone in 2 hours to 60... This equation with: the speed of the a boat takes 2 hours to travel 15 miles upstream against the current statement is 10 hours a river a. And then returns to the entries in the current opposite direction of the trip is 10 hours amount time... ___________________ it is impossible for any applicant to solve the question, which was to find two numbers such the... The same time train B is the rate of 1/t reports per hour ) will be pushing get! Of the current ( which is C miles per hour distance = speed Lets.
a boat takes 2 hours to travel 15 miles upstream against the current