Multiple Choice Questions on A train goes from StationA to StationB at 45km hr and returns to A at a slower speed If its average ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A train goes from StationA to StationB at 45km hr and returns to A at a slower speed If its average ...........

Quantitative Aptitude ( CCS) Problems on trains
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    A train goes from StationA to StationB at 45km/hr and returns to A at a slower speed. If its average speed for the whole journey is 36 km/hr, at what speed did it return?

    32km/hr

    Incorrect Answer

    30km/hr

    Correct Answer

    25km/hr

    Incorrect Answer

    26km/hr

    Incorrect Answer
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    Explanation:

    Solution:
    Average speed=2xy/(x+y)
    =2*45*x/(45+x)=36
    45x=18(45+x)
    X=30km/hr.

    By: Pranav Gupta
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