A man can row a boat 10 km/hr in still water. When the speed of the stream is 4 km/hr, it takes 30 hours to row to a certain place and come back. How far is the place ?

A man can row a boat 10 km/hr in still water. When the speed of the

1.	A man can row a boat 10 km/hr in still water. When the speed of the stream is 4 km/hr, it takes 30 hours to row to a certain place and come back. How far is the place ?
A.	29 km
B.	75 km
C.	126 km
D.	406 km
Answer» D. 406 km

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A man can row a boat 10 km/hr in still water. When the speed of the stream is 4 km/hr, it takes 30 hours to row to a certain place and come back. How far is the place ?

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