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Time and Speed

A man can row...

Question

A man can row three-quarters of a kilometre against the stream in 11 minutes and down the stream in 7minutes. The speed (in km/hr) of the man in still water is:

A

2

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B

3

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C

4

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D

5

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Solution

The correct option is D 5
We can write three-quarters of a kilometre as 750 metres,
and 1114

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