12 pumps working 6 hours a day can empty a completely filled reservoir | Examsbook

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1979 1

Q:
12 pumps working 6 hours a day can empty a completely filled reservoir in 15 days. How many such pumps working 9 hours a day will empty the same reservoir in 12 days?

1
15
2
9
3
10
4
12

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Workspace

Answer : 3. "10"

Maths Pipe and Cistern Questions

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