Mathematics, 09.09.2021 16:10 toxsicity

A swimming pool that holds 1200 gallons of water can be completely drained by a two pumps. The first pump is small and can only remove 300 gallons from the pool. If the second pump is used and it removes 20 gallons every minute, how many minutes will it take to completely drain the pool?

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A swimming pool that holds 1200 gallons of water can be completely drained by a two pumps. The first pump is small and can only remove 300 gallons from the pool. If the second pump is used and it removes 20 gallons every minute, how many minutes will it take to completely drain the pool?​

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Another question on Mathematics

A swimming pool that holds 1200 gallons of water can be completely drained by a two pumps. The first pump is small and can only remove 300 gallons from the pool. If the second pump is used and it removes 20 gallons every minute, how many minutes will it take to completely drain the pool?