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A man rows upstream 12 km and downstream...

A man rows upstream 12 km and downstream 28 km taking 5 hours each time. The velocity of water current is:

A

`2(1)/(5)km//h`

B

`2(1)/(2)km//h`

C

`3 km//h`

D

`1(3)/(5) km//h`

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Verified by Experts

The correct Answer is:
D
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MAHENDRA-BOAT & STREAM-EXERCISE
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  7. A boatman can row 48 km downstream in 4 hr. If the speed of the curren...

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  8. A man can row at a speed of 10 km/hr in still water to a certain upstr...

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  10. A boat travels 2 km upstream in a stream flowing at 3 km/hr and then r...

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  11. A man swimming in a stream which flows 1(1)/(2) km/hr finds that in a ...

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  12. A boat travels upstream from B to A and downstream from A to B in 3 ...

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  13. A man rows upstream 12 km and downstream 28 km taking 5 hours each tim...

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  14. Twice the speed downstream is equal to the thrice the speed upstream, ...

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  15. A man can swim 3 km/hr in still water. If the velocity of the stream ...

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  16. A boat covers 24 km upstream and 36 km downstream in 6 hours wh...

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  17. A boatman goes 2 km against the current of the stream in 1 hour and go...

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  18. The speed of boat in still water is 8 km/h. The boat goes 6km & back t...

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  19. A boat travels 40 km. up stream and 55 km. down stream in 13 hours. It...

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  20. A boat covers 24 km. upstream and 36 km. down stream in 24 hours. Whil...

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