Quantitative Aptitude :: Time and Work - Discussion
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A is twice as good a workman as B and together they finish a piece of work in 18 days. In how many days will A alone finish the work
A7 days
B21 days
C27 days
DNone of these
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Given A is twice as good a workman as B
So (A’s 1 day’s work): (B’s 1 day’s work) = 2:1.
(A + B)’s 1 day’s work = 1/18.
Divide 1/18 in the ratio 2:1.
Therefore A’s 1 day’s work = (1/18 * 2/3) = 1/27.
Hence, A alone can finish the work in 27 days.
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