Multiple Choice Questions on If 10 boys or 18 girls can do a piece of work in 15 days then 25 boys and 15 girls together will do ........... for SSC CHSL Preparation

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Multiple Choice Questions

If 10 boys or 18 girls can do a piece of work in 15 days then 25 boys and 15 girls together will do ...........

Quantitative Aptitude (CHSL) Time and work
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    If 10 boys or 18 girls can do a piece of work in 15 days, then 25 boys and 15 girls together will do twice the work in ?

    4.5 days

    Incorrect Answer

    8 days

    Incorrect Answer

    9 days

    Correct Answer

    36 days

    Incorrect Answer
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    Explanation:

    10 boys = 18 girls hence 1 boy = 18/10 girls
    25 boys + 15 girls = (25 * 18/10) + 15 = 60
    now more work more days
    more girls less days1 * 60 * x = 2*18*15
    or x = (2*18*15)/60 = 9 days

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