Multiple Choice Questions on Speed of a boat in standing water is 12 kmph and the speed of the stream is 3 kmph A man rows to a p........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Speed of a boat in standing water is 12 kmph and the speed of the stream is 3 kmph A man rows to a p...........

Quantitative Aptitude ( CCS) Boats and Streams
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    Speed of a boat in standing water is 12 kmph and the speed of the stream is 3 kmph. A man rows to a place at a distance of 6300 km and comes back to the starting point. The total time taken by him is:

    1120hrs

    Correct Answer

    1000hrs

    Incorrect Answer

    980hrs

    Incorrect Answer

    850hrs

    Incorrect Answer
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    Explanation:

    Solution: 
    Downstream speed = (12 + 3) = 15 km/hr
    Upstream speed = (12 – 3) = 9 km/hr
    Total time taken =6300/15+6300/9
    =420+700==>1120hrs.

    By: Pranav Gupta
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