question_answer

X and Y can together finish a job in 12 days. X car finish it alone in 20 days. In how many days can Y alone finish the job?

A) 30 days

B) 35 days

C) 40 days            

D) 25 days

Correct Answer: A

Solution :

Let, Y alone can finish the job in y days. Then-             y = 30 days