defence exam BSF Constable (Tradesmen) 2023 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A, B and C can do a work separately in 20, 35 and 60 days, respectively. They started the work together, but B and C left 8 days and 12 day, respectively, before the completion of the work. In how many days will the work be completed?
1
10 days
2
12 days
3
20 days
4
15 days