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A metalworker has a metal alloy that is 15% copper and another alloy that is 65% copper. How many kilograms of each alloy should the metalworker combine to create 100kg of a 45% copper alloy?

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A metalworker has a metal alloy that is 15% copper and another alloy that is 65% copper. How many...

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A metalworker has a metal alloy that is 15​% copper and another alloy that is ​65% copper. How many kilograms of each alloy should the metalworker combine to create 100kg of a 45​% copper​ alloy?

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Another question on Mathematics

A metalworker has a metal alloy that is 15% copper and another alloy that is 65% copper. How many kilograms of each alloy should the metalworker combine to create 100kg of a 45% copper alloy?