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15.
twenty pounds of a salt-water solution contains fifteen per cent salt.
how much water must be added to weaken the solution to twelve per cent

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15.
twenty pounds of a salt-water solution contains fifteen per cent salt.
how much wate...

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15. twenty pounds of a salt-water solution contains fifteen per cent salt. how much water must be added to weaken the solution to twelve per cent

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Another question on Mathematics

15.
twenty pounds of a salt-water solution contains fifteen per cent salt.
how much water must be added to weaken the solution to twelve per cent