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    Question

    A is twice as good a workman as B and together they

    finish a piece of work in 14 days. The number of days taken by A alone to finish the work is┬а
    A 11 days Correct Answer Incorrect Answer
    B 21 days Correct Answer Incorrect Answer
    C 28 days Correct Answer Incorrect Answer
    D 42 days Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let daily work done of A =2units & Daily work done of B =1units So (A+B)тАЩs 1 day work = 2+1 = 3units;┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а Total work done by A & B in 14 days = 14├Ч3 =42 units┬а┬а┬а ┬аSo A alone can complete job in┬а = 42/2 = 21 days

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