Teaching BPSC Head Teacher Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern

Three pipes A, B, and C can fill a tank in 20, 15, and 30 hrs respectively. If all the pipes are open at the same time, then what is the time taken to fill the tank?

1

6.67 hrs

2

15 hrs

3

10 hrs

4

More than one of the above

5

None of the above

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