A man can do a piece of work in 15 days. His son can do the same work – McqOptions

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1.	A man can do a piece of work in 15 days. His son can do the same work in 10 days. If both of them together do the work, then in how many days will they complete it?
A.	5
B.	6
C.	1/6
D.	25
Answer» C. 1/6

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