A man can row three-quarters of a kilometre against the stream in 11 1/4minutes and down the stream in 7 1/2 minutes. The speed (in km/hr) of the man in still water is:

A man can row three-quarters of a kilometre against the stream in 11 1

1.	A man can row three-quarters of a kilometre against the stream in 11 1/4minutes and down the stream in 7 1/2 minutes. The speed (in km/hr) of the man in still water is:
A.	3
B.	2
C.	5
D.	4
Answer» D. 4