Question

 A man can do a piece o 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) 6(1/2) days                 B) 7 days    C) 7(1/2) days          D) 8 days​

Answer 1

Answer:

b

Step-by-step explanation:

Answer 2

Step-by-step explanation:

A man can do a piece of work in 5 days.

Man's 1 day work= 1/5 part

Their can do work together in = 3 days

their together 1 day work= 1/3 part

son 1 day work= 1/3-1/5

= 2/15 part

son can do the remaing work in 15/2= 7(1/2) days

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