engineering recuitment NIC NIELIT Scientist B 2023 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A can do a certain work in 15 days and B can do one-third of the same work in 10 days. A and B work together for 6 days and then A leaves. B completes the remaining work with C in 8 days. A and C together can complete the original work in :
1
12 days
2
9 days
3
15 days
4
18 days