66.A
boat covers a certain distance downstream in 2 hours but takes 4 hours to
return upstream to the starting point. If the speed of the stream be 3 km/hr,
find the speed of the boat in still water.
[A]
11 km/hr
[C]
9 km/hr
[B]
13 km/hr
[D]
None of these
Answer : [C]
Explanation :
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Speed
of the boat in still water
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