state gov Bihar Vidhan Parishad Assistant & DEO Mock Test 2023 Quantitative Aptitude Time and Work Work Efficiency
A can do a piece of work in 8 days and B in 24 days. They begin together, but 4 days before the completion of the work, A leaves. Find the number of days taken by A and B to complete the entire work.
1
11 days
2
8 days
3
9 days
4
7 days