defence exam CISF Constable Tradesman 2025 Mock Test Quantitative Aptitude Time and Work Work Efficiency
P and Q can do a work in 12 days. Q and R can do the same work in 16 days and R and P can do it in 24 days. Find the approximate time in which P, Q and R can finish the work together.
1
11 days
2
8 days
3
23 days
4
21 days