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Multiple Choice Questions

Mr Suresh can row to a place 48 km away and come back in 14 hours He finds that he can row 4 km with...........

Quantitative Aptitude (CUET) Boats and Streams

Mr. Suresh can row to a place 48 km away and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is?

1 kmph

3 kmph

4 kmph

6 kmph

Explanation:

Solution:
Downstream speed = 4/x kmph
upstream speed = 3/x kmph
48/(4/x) + 48/(3/x) = 14
Solving we get x = 1/2 kmph
So, Speed of downstream = 8 kmph, Speed of upstream = 6 kmph
Stream Speed = 1/2(8 – 6) kmph = 1 kmph

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