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8th grade

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An alloy of metals is 25% copper .Another alloy is 50% copper. How much of each alloy should be used to make 1000grams of an alloy that is 45% copper?

  • 8th grade -


    where x is the number of grams of 25% copper

    and 1000-x is the rest of the 1000 grams i.e. the number of grams of 50%

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