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        A man rows directly across a river in time t second and rows an equal distance down the stream in T second. Find the ratio of man's speed in still water to the speed of river water
5 years ago

Mohit Chhabra
18 Points
							let the man rows a distance of d meterslet velocity of man is v in still waterlet velocity of river is V now time taken by man to row in still water is t, which is equal tot=d/v {eq 1}now time taken by man to row the same distance while going downstream is T, which is equal toT=d/(v+V) {eq 2}  {velocity of man and river adds while going downstream}divide numerator and denominator in eq 2 by v1+(V/v) = t/T v/V = T/(t-T)pls tell is this ansewr helpful..

5 years ago
Abhinav
387 Points
							let speed of man be Vand speed of river flow U.thananddividing both equations and rearranging

5 years ago
Arati Sinha
12 Points
							Sorry, mohit and abhinav but the answer is( t2+T2)/(t2-T2). So the process suggested is not helpful. I hope after knowing the answer maybe you can suggest me the correct process.....

5 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions