engineering recuitment FSSAI Assistant Mock Test 2021 Quantitative Aptitude Time and Work Work Efficiency
Two teachers A and B can complete an academic work in 10 days and 15 days respectively. They started the work together, but A left after 5 days and another teacher C joined, who alone can complete the work in 60 days. In how many days the work got completed?
1
7
2
5
3
6
4
2