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OpenStudy (anonymous):
one alloy contains 80% gold (by weight) and another alloy contains 55% gold. how many grams of each alloy should be combined to make 40 grams of an alloy that contains 70% gold?
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OpenStudy (anonymous):
24grams of 55% gold and 16 gram of 80% gold should mixed to form 40 grams of 70% gold
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