Subject

    Quantitative Aptitude

    Topic

    Unitary Method

    2 men and 7 boys can do a piece of work in 14 days; 3 men and 8 boys can do the same in 11 days. Then, 8 men and 6 boys can do three times the amount of this work in ?

    ক)
    18 days
    খ)
    21 days
    গ)
    24 days
    ঘ)
    30 days

    Explanation

    Solution: 11 boys can do the work in = 14 days So, 1 boy can do it in = 14 × \times 11 days Then 22 boys can do it in = 14 × \times 11/ 22 = 7 days Hence, the required number of days to do thrice the work is = 7× \times 3 = 21

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