defence exam BSF Constable (Tradesmen) 2023 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A can complete a work in 10 days and B can complete it in 15 days. If they work on it together for 5 days, then the fraction of the work left will be:
1
\(1 \over6\)
2
\(1 \over2\)
3
\(1 \over 3\)
4
\(1 \over8\)