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A boat goes 24 km upstream and 28 km ...

A boat goes 24 km upstream and 28 km downstream in 6 hrs. It goes 30 km upstream and 21 km downstream in `6 1/2\ h r sdot` Find the speed of the boat in still water and also speed of the stream.

A

8 km/hr

B

9 km/hr

C

12 km/hr

D

10 km/hr

Text Solution

Verified by Experts

The correct Answer is:
D
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