Multiple choice

A man can row at 5 kmph in still water. If the velocity of the current is 1 kmph and it takes him 2 hours to row to a place and come back, how far is the place?

  1. 4.8 km

  2. 12 km

  3. 48 km

  4. 10 km

  5. None of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Speed downstream = (5 + 1) = 6 kmph Speed upstream = (5 - 1) = 4 kmph Let the distance be x. Then, (x/6) + (x/4) = 2 2*x + 3*x = 24 x = 4.8 km