Multiple Choice Questions on A man rows down a river 15 km in 3 hrs with the stream and returns in 15 2 hrs The rate at which he ........... for RBI Grade B Exam Preparation

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Multiple Choice Questions

A man rows down a river 15 km in 3 hrs with the stream and returns in 15 2 hrs The rate at which he ...........

Quantitative Aptitude (RBI Grade B) Boats and Streams
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    A man rows down a river 15 km in 3 hrs. with the stream and returns in 15/2 , hrs. The rate at which he rows in still water is

    2.5 km/hr

    Incorrect Answer

    1.5 km/hr

    Incorrect Answer

    3.5 km/hr

    Correct Answer

    4.5 km/hr

    Incorrect Answer
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    Explanation:

    Downstream speed, D = 15 km/3 hr. = 5 km/hr
    Upstream speed, U = (15 ×2) /15 = 2 km/h
    Speed of man in still water, = (D + U)/2
    (5 + 2)/2 = 7/2 = 3.5 km/hr

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