79.A
boat running upstream takes 8 hours 48 minutes to cover a certain distance,
while it takes 4 hours to cover the same distance running downstream. What is
the ratio between the speed of the boat and speed of the water current
respectively?
[A]
2 : 1
[C]
8 : 3
[E]
None of these
Answer : [C]
Explanation :
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Let
the man rate upstream be x kmph and that downstream be y kmph.
Then,
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Distance
covered upstream in 8 hrs 48 min. = Distance covered downstream in 4 hrs.
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