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Mathematics, 09.11.2020 20:50 2021andrewkell
A metallurgist wants to make 130 grams of an alloy that is to be 20% copper. She has samples that are 14% copper and 22% copper. How many grams of the sample that contains 14% should she use?
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A metallurgist wants to make 130 grams of an alloy that is to be 20% copper. She has samples that ar...
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