other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Time and Work Work Efficiency
A work can be completed by A in 40 days and by B in 30 days. They work together for some time, then B left the work. If A completed the rest of the work in 10 days,then B work for?
1
80/3 days
2
70/11 days
3
90/13 days
4
90/7 days