If A can complete a work in 24 days and B can complete it in 36 days, how much work will be left if

A. 1/3

B. 1/4

C. 1/2

D. 1/6

E. None of the above

Answer: A. 1/3

In 8 days, A and B together complete 8 * (1/24 + 1/36) = 8 * 5/72 = 5/9 of the work. Thus, 1 - 5/9 = 4/9 of the work is left.

Posted in: Time & Work - Aptitude - Mathematics