A and B can do a piece of work in 45 days and 40 days respectively. Th – McqOptions

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1.	A and B can do a piece of work in 45 days and 40 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days after which A left the work was?
A.	6
B.	8
C.	9
D.	12
Answer» D. 12

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