Question

A man rows a boat at a speed of 5km/hr in still water. Find the speed of a river if it takes him 1 hour

to row a boat to a place 2.4 km away and return back.​

Answer 1

Answer:

Speed of man's boat in still water = 5 kmph.

Effective speed of man's boat when rowing upstream = (5-1) kmph = 4 kmph.

Total time taken is 75 minutes i.e. 1 hour 15 minutes.