Mathematics, 26.03.2020 00:55 crysderria

A metalworker has a metal alloy that is 15% copper and another alloy that is 60% copper. How many kilograms of each alloy should the metalworker combine to create 80 kg of a 51% copper alloy

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A metalworker has a metal alloy that is 15% copper and another alloy that is 60% copper. How many ki...