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Mathematics, 10.07.2021 14:30 sotoamerica0814
An alloy of copper and zinc which contains 5 grams of zinc. If 15 grams of zinc are added to this alloy, a new alloy is obtained in which the copper content has been reduced by 30% from the original. Find the initial mass of the alloy
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An alloy of copper and zinc which contains 5 grams of zinc. If 15 grams of zinc are added to this al...
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