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A boy can cover double distance when swi...

A boy can cover double distance when swimming with the stream in a definite time period than against the stream. If speed of stream is 3 km./hr., what will be speed of boy in still water-

A

6 km /hr

B

9 km/hr

C

10 km/hr

D

12 km /hr

Text Solution

Verified by Experts

The correct Answer is:
B
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