SSC NTA Delhi University Non-Teaching 2021 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A can do a piece of work in 12 days. B is 20% more efficient than A. If C also works with A and B then together they finish the work in 4 days. In how many days will C finish the work alone?
1
10 days
2
12 days
3
15 days
4
18 days