engineering recuitment UPCL AE (E&M) 2021 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A, B, and C can do a piece of work in 15 days, 30 days, and 40 days respectively. In how many days A can do the work if he is assisted every third day by B and C.
1
11.61 days
2
11 days
3
12 days
4
15 days