other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Time and Work Work Efficiency
A alone can complete work in 30 days, B alone can complete the work in 50 days and C alone can complete the work in 100 days. A, B and C together complete the 57% of the work in
1
9 days
2
3 days
3
5 days
4
6 days