A man can row three-quarters of a kilometre (km) against the stream in 11.25 minutes and down the stream in 7.5 minutes. The speed (in km/hr) of the man is still water is :
A. 4 k km/hr
B. 5 km/hr
C. 6 km/hr
D. 6.5 km/hr
E. None of these
সঠিক উত্তরঃ
B.
5 km/hr
Explanation:
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