A can do a work in 20 days and B can do the same work in 30 days. In h – McqOptions

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1.	A can do a work in 20 days and B can do the same work in 30 days. In how many days can A and B together do the work ?
A.	10
B.	12
C.	15
D.	16
Answer» C. 15

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