A is twice as good a workman as B and together they finish a piece of work in 14 days The number of ...........

Quant (SSC) Time and work

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

11 days

21 days

28 days

42 days

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Explanation:

To solve this question, we can apply a short trick approach;
A is n times as good a workman as B. If together, they finish the work in x days,
then A and B separately can do the same work in
(n + 1/n), x days and in (n + 1)x days respectively.
By the short trick approach:
A finish the work in (2 + 1/2) x 14 = 21 days