89.A
man can row downstream at the rate of 15 km/hr and upstream at 10 km/hr. Find
man’s rate in still water and the rate of current?
[A]
2.5
[C]
3.5
[B]
3
[D]
6
Answer : [A]
Explanation :
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Man's
rate in still water =
|
1
|
(15
+ 10) km/hr = 12.5 kmph
|
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2
|
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Rate
of current =
|
1
|
(15
- 10) kmph = 2.5 kmph
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2
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