A alone can do a piece of work in 20 days and B alone in 30 days. They – McqOptions

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1.	A alone can do a piece of work in 20 days and B alone in 30 days. They begin to work together. They will finish half of the work in :
A.	6 days
B.	8 days
C.	9 days
D.	12 days
Answer» B. 8 days

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