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A man takes 3 hours 45 minutes to row...

A man takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2 hours 30 minutes to cover a distance of 5 km upstream. Find the speed of the river current in km/hr.

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RS AGGARWAL-BOATS AND STREAMS-All Questions
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  2. A man takes 3 hours 45 minutes to row a boat 15 km downstream of a ...

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  3. The ratio of speeds of a motor boat to that of the current of water is...

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  4. A man can row 6 km/hr in still water. It takes him twice as long to...

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  5. There is a road beside a river. Two friends started from a place A, mo...

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  6. A man can row 7 1/2 kmph in still water. If in a river running at 1.5 ...

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  7. A boat goes 8 km upstream and then returns. Total time taken is 4 h...

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  8. A boatman row to a place 45 km distant and back in 20 hours. He fin...

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  9. A man can row 40 km upstream and 5 km downstream in 13 hours. Also he ...

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  10. A boat goes 8 km in one hour along the stream and 2 km in one hour ...

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  11. In one hour, a boat goes 11 km along the stream and 5 km against th...

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  12. A man rows downstream 32 km and 14 km upstream. If he takes 6 hours to...

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  13. A boatman row 1 km in 5 minute, along the stream and 6 km in 1 hour ag...

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  14. A boat takes half time in moving a certain distance downstream than up...

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  15. If a man goes 18 km downstream in 4 hours and returns against the stre...

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  16. A boat man goes 2 km against the current of the stream in 1 hour and g...

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  17. A man can row 3/4 of a km against the stream in 11 1/4 minutes and ret...

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  18. A boat, while going downstream in a river covered a distance of 50 ...

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  19. A man swimming in a stream which flows 1 1/2\ km//hr finds that in a g...

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  20. A boat running upstream takes 8 hours 48 minutes to cover a certain...

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