Multiple choice

A man can row 15 kmph in still water, and the river is running at 3 kmph. There is a point P, 36 km away from him. Find the time taken by him in going to point P and coming back.

  1. 4 hrs

  2. 2 hrs

  3. 5 hrs

  4. cannot be determined

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Downstream speed = 15 + 3 = 18 kmph, upstream speed = 15 - 3 = 12 kmph. Time to go = 36/18 = 2 hours, time to return = 36/12 = 3 hours. Total time = 5 hours.

Keep practicing — related questions