other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Time and Work Work Efficiency
Amit and Bablu can do a piece of work in 12 days, Bablu and Chandu in 15 days, Chandu and Amit in 20 days. Amit alone can do the work in
1
24 days
2
40 days
3
\(15\frac{2}{3}\)days
4
30 days