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A person can swim at a speed of 9 km per...

A person can swim at a speed of 9 km per hour in still water. If the speed of the stream is 6 km per hour, then how long does he take to swim up to a distance of 9 km and return at the starting point?

A

2 hours

B

`2(1)/(2)` hours

C

`3(3)/(5)` hours

D

`3(3)/(5)` hours

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Verified by Experts

The correct Answer is:
C
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