Question (45/50)
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) 6.5 Days
(B) 7 Days
(C) 7.5 Days
(D) 8 Days
Question (46/50)
A man can do a job in 15 days. His father can finish same job in 20 days while his son takes 25 days to finish same job. How long it will take to complete the job if they all work together ?(A) Less than 6 days
(B) Exactly 6 days
(C) Around 6.4 days
(D) More than 7 days