Subject

    Quantitative Aptitude

    Topic

    Number

    49 pumps can empty a reservoir n 5 days, working 8 hours a day . If 196 pumps are used for 5 hours each day ,then the same work will be completed in-

    ক)
    3 days
    খ)
    2  days
    গ)
    2(½) days
    ঘ)
    2(⅗) days

    Explanation

    Let,   the required number of days be x.  Then, More pumps, Less days (Indirect Proportion)  Less working hrs / day, More days (Indirect Proportion)  Pumps =196 : 49  Working Hrs / Day =5 : 8 :: 13/2 : x 96 x 5 x x = 49 x 8 x 13/2 x = 49 x 8 x 13/2 x 1 / (196 x 5) x = 13/5

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