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A boat covers 24 km upstream and 36 ...

A boat covers 24 km upstream and 36 km downstream in 6 hours while it covers 36 km upstream and 24 km down - stream in `6(1)/(2)` hours .The speed of the current is

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10 km/h
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ADVANCED MATHS BY ABHINAY MATHS ENGLISH-BOATS AND STREAM-QUESTIONS
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  16. A sailor in river takes a boat from place A to place B, and returns to...

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