A man can do a piece of work in 5 days, but with the help of his son he can do it in 3 days. In what time can the son do it alone?

A man can do a piece of work in 5 days, but with the help of his son h

1.	A man can do a piece of work in 5 days, but with the help of his son he can do it in 3 days. In what time can the son do it alone?
A.	7.5 days
B.	8 days
C.	7 days
D.	6 days
Answer» B. 8 days

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A man can do a piece of work in 5 days, but with the help of his son he can do it in 3 days. In what time can the son do it alone?

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