railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Quantitative Aptitude Time and Work Work Efficiency
P, Q, R can do a piece of work in 40 days, 90 days and 36 days, respectively. P started the work. Q joined him after 7 days. If R joined them after 8 days from the beginning, then for how many days did R work?
1
\(11\frac{8}{{23}}\)
2
\(12\frac{8}{{23}}\)
3
\(15\frac{8}{{23}}\)
4
\(13\frac{8}{{23}}\)