railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern

Pipe A, B and C can fill a tank in 20 hrs, 30 hrs and 60 hrs respectively. If all three pipes open simultaneously and work for 5 hrs, then after closing pipe A and C in how many hours the remaining tank will full?

1

15 hrs

2

10 hrs

3

5 hrs

4

18 hrs

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