A pump can fill a pool in 9 hours. After 5 hours another pump is brought in. This pump, by itself, can fill the pool in 3 hours. How much longer (in hours) will it take for both pumps, working together, to fill the pool?

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18-06-2024
Mathematics

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A pump can fill a pool in 9 hours. After 5 hours another pump is brought in. This pump, by itself, can fill the pool in 3 hours. How much longer (in hours) will it take for both pumps, working together, to fill the pool?

Sagot :

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A pump can fill a pool in 9 hours. After 5 hours another pump is brought in. This pump, by itself, can fill the pool in 3 hours. How much longer (in hours) will it take for both pumps, working together, to fill the pool?

Sagot :

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