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desiree6005
20.07.2019 •
Mathematics
An alloy of copper is 10% copper and weighs 25 pounds. a second alloy is 18% copper. how much (to the nearest lb.) of the second alloy must be added to the first alloy to get a 13% mixture.
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Ответ:
Ответ:
its the frist one (The ratio 9 to 12 is greater than 4 to 6.)
Step-by-step explanation: