SOLUTION: how many ounces of pure silver should be added to 80 ounces of 75% pure, to obtain a mixture of 80% pure ?

SOLUTION: how many ounces of pure silver should be added to 80 ounces of 75% pure, to obtain a mixture of 80% pure ?

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Question 610144: how many ounces of pure silver should be added to 80 ounces of 75% pure, to obtain a mixture of 80% pure ?
Answer by flame8855(424) (Show Source): You can put this solution on YOUR website!
cava=cbvb
0.75*80= 0.8*vb
vb= 75 ounces
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