state gov DSSSB Warder, Assistant Superintendent, Matron Mock Test 2024 Quantitative Aptitude Time and Work
Working 6 hours a day, R1 can complete a piece of work in 18 days. Working 15 hours a day, R2 can complete the same work in 12 days. In how many days can both R1 and R2 together complete the same work by working 9 hours a day?
1
9 days
2
8 days
3
7.5 days
4
10.5 days