state gov DSSSB Junior Assistant, Steno and LDC Mock Test 2023 - 24 Quantitative Aptitude Time and Work Pipe and Cistern
A, B, and C are three taps connected to a cistern. When A and B together are opened, they fill the tank in 10 h, B and C together fill the tank in 6 h and A and C together fill the tank in 12 h. In how much time will all three together fill the tank?
1
43 / 6 h
2
41 / 7 h
3
40 / 7 h
4
36 / 7 h