defence exam CRPF Head Constable Ministerial & ASI 2022 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A and B can do a piece of work in 10 days, B and C in 15 days and C and A in 20 days, then C alone can do the same work in how many days?
1
120 days
2
60 days
3
30 days
4
80 days