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,

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 days
B.	7 1/2 days
C.	8 days
D.	8 1/2 days
Answer» E.

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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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