Practice Test Discussion

Q)

A alone can complete a assignment in 12 days & B alone can complete the same assingment in 24 days. In how many days can A & B together complete the same assingment ?

[Bank Clerks 2009]


  • Explanation

    According to the question,

    A's  1 day work = 1/12 

    B's 1 day work = 1/24 

    (A+B's 1 day work)

    112+124=2+124=324=18

    ∴ (A+B) will finish the assingment  in 8 days.

    Hence option D is correct.

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