Rapids

A man can row 5km per hr in still water. If the river is running at 1km per hr, it takes 75mts to row to a pla

A man can row 5km per hour in still water. If the river is running at 1km per hour, it takes 75minutes for him to row to a place and come back. How far is the place?- please fetch me the answer with working i.e., the way to solve this...

Public Comments

1. Assuming the place is either upstream or downstream, not across the river. Let the distance to the place be x Speed=Distance/Time Time = Distance/Speed Convert 75minutes to hours = 1.25hrs 1.25 = x/4 + x/6 15 = 3x + 2x 5x =15 x=3 km So the place is 3km away