SOLUTION: British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepar

Question 704201: British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 210 grams of a copper-silver alloy that is 12% copper by weight? (Round your answers to one decimal place.)
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
x grams pure copper, y grams of the sterling silver.

Solve both for x, then equate the results of x to find y.

x=25 grams pure copper,
y=185 grams sterling silver.
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