Question

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

Answer 1

If the distance is X and Velocities in Up stream and down stream will be 5 -1 =4KMPH and 5+1 = 6KMPH respectively.So Distance/velocity = time.X/6 + X / 4 = 1 hour10X = 24x = 2.4