Mathematics, 03.08.2019 21:30, bridgetosanders

Ametalworker has a metal alloy that is 25% copper and another alloy that is 65% copper. how many kilograms of each alloy should the metalworker combine to create 120 kg of a 49% copper alloy? the metalworker should use nothing kilograms of the metal alloy that is 25% copper and nothing kilograms of the metal alloy that is 65% copper.

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Ametalworker has a metal alloy that is 25% copper and another alloy that is 65% copper. how many kil...