railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Time and Work Work Efficiency
Amit can do \(\frac{1}{2}\) part of a work in 7 days while Alam can do \(\frac{1}{2}\) part of the same work in 9 days. In how many days can both together finish the work?
1
5.2 Days
2
8 Days
3
12 Days
4
\(\frac{63}{8}\) Days