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Mathematics, 17.11.2020 17:40 j015

A metalworker has a metal alloy that is 25% copper and another allot that is 75% copper. How many kilograms of each alloy should the metalworker combine to create 90kg of 55% copper alloy? The metalworker should use kilograms of the metal alloy that is 25% copper and kilograms of the metal alloy that is 75% copper.

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A metalworker has a metal alloy that is 25% copper and another allot that is 75% copper. How many ki...

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