76.Speed
of a man is 10 km/hr in still water. If the rate of current is 3 km/hr, then
the effective speed of the man upstream is
[A]
7 km/hr
[C]
9 km/hr
[B]
8.5 km/hr
[D]
None of these
Answer : [A]
Explanation :
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Speed
of man in still water = 10 km/hr
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Speed
of current = 3 km/hr
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Speed
of man upstream = 10 – 3 = 7km/hr
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