other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Time and Work Work Efficiency
A alone can complete work in 12 days, B alone can complete the work in 15 days and C alone can complete the work in 20 days. A, B and C together complete the 80% of the work in
1
2 days
2
4 days
3
5 days
4
6 days