other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Time and Work Work Efficiency
X, Y and Z can do a piece of work in 10 days, 12 days and 15 days respectively. X, Y and Z worked for 2 days and then Y and Z left then in how many days X complete the remaining work?
1
3 days
2
5 days
3
6 days
4
8 days