railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Quantitative Aptitude Time and Work Work Efficiency
A, B, and C can complete a work in 15, 30, and 20 days respectively. A left the work 1 day before the work was completed and B left 2 days before the completion of the work. Find the number of days required to complete the whole work.
1
88/7 days
2
75/9 days
3
68/9 days
4
84/9 days