railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Quantitative Aptitude Time and Work Work Efficiency
A can complete a piece of work in 45 days. B is 80% more efficient than A, and C is 25% less efficient than B. B and C together work for 10 days. A alone can complete the remaining work in:
1
12\(\frac{1}{2}\) days
2
15 days
3
13\(\frac{1}{2}\) days
4
12 days