As is twice as efficient a workman as B. If they work together, they take 21 days to complete a task. How many days will A alone take to complete the same task?

As is twice as efficient a workman as B. If they work together, they t

1.	As is twice as efficient a workman as B. If they work together, they take 21 days to complete a task. How many days will A alone take to complete the same task?
A.	\(23\frac{1}{4}\)
B.	\(62\frac{1}{2}\)
C.	\(53\frac{1}{4}\)
D.	\(31\frac{1}{2}\)
Answer» E.

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As is twice as efficient a workman as B. If they work together, they take 21 days to complete a task. How many days will A alone take to complete the same task?

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