A can do a piece of work in 14 days which B can do in 21 days. The beg – McqOptions

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1.	A can do a piece of work in 14 days which B can do in 21 days. The begin together but 3 days before the completion of the work, A leaves off. The total number of days to complete the work is
A.	6.6
B.	8.5
C.	10.2
D.	13.5
Answer» D. 13.5

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