Mathematics, 04.05.2021 21:10 michael2737

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A metalworker has a metal alloy that is 30% copper and another alloy that is 55% copper. How many kilograms of each alloy should the metalworker combine to create 120 kg of a 50% copper alloy?
The metalworker should use kilograms of the metal alloy that is 30% copper and kilograms of the metal alloy that is 55% copper.
(Type whole numbers.)

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12 of 20 (14 complete) v Tuis Cuiz:
A metalworker has a metal alloy that is 30% copper and a...