A man rows at the rate of 5 km/hr in still water. If the river is flowing at the rate of 1 km/hr, it takes him 75 minutes to row to a place and return. How far is the place?
A. 2.5 km/h
B. 3 km/h
C. 3.5 km/h
D. 4 km/h
Answer: Option B
Solution(By Examveda Team)
speed=distance/timetime 75/60=d/4+d/6
d=3 km
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