A, B and C can do a piece of work in 20,30 and 60 days respectively. In how many days A do the work if he is assisted by B and C on every third day?
A. 12 days
B. 15 days
C. 16 days
D. 18 days
Answer:B
A, B and C can do a piece of work in 20,30 and 60 days respectively. In how many days A do the work if he is assisted by B and C on every third day?
A. 12 days B. 15 days C. 16 days D. 18 days