Question

A swimming pool can be filled in 4 hours by 12 pumps of the same type.
1) If two pumps stop working, then the swimming pool will be filled in how
many hours ?
2) How many such pumps are required if the pool is to be filled in 3 hours?

Answer 1

Answer:

1) 4×12 = 10× x

x = 4.8 hr

2) 4×12= 3× x

x = 16 pumps

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