PPSC Past Paper Elementary School Educator General in Labour & Human Resource Department. 2019 Solved MCQs, Maths MCQs, PPSC Solved Past Papers MCQsA, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can 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 A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?