A can do a piece of work in 30 days while B alone can do it in 40 days – McqOptions

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1.	A can do a piece of work in 30 days while B alone can do it in 40 days. In how many days can A and B working together do it ?
A.	17.14
B.	27.14
C.	42.75
D.	70
Answer» B. 27.14

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