Q: A can do a piece of work in 21 days and B in 28 days. Together they – McqOptions

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1.	Q: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ?
A.	14 days
B.	18 days
C.	21 deays
D.	16 days
Answer» B. 18 days

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