A and B can do a piece of work in 30 days and 18 days respectively. A – McqOptions

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1.	A and B can do a piece of work in 30 days and 18 days respectively. A started the work alone and then after 6 days B joined him till the completion of the work. In how many days has the whole work completed?
A.	12
B.	9
C.	15
D.	17
Answer» D. 17

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