SOLUTION: Sterling silver is 92.5% pure silver. How many grams of sterling silver must be mixed to a 90% alloy to obtain a 500g of a 91% silver alloy?
Algebra.Com
Question 426155: Sterling silver is 92.5% pure silver. How many grams of sterling silver must be mixed to a 90% alloy to obtain a 500g of a 91% silver alloy?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
500x.91=455
m+n=500
.9m+.925n=455
900m+925n=455000
900m+900n=450000
25n=5000
n=200
m=300
You need 300g of 90% alloy to mix with 200g of sterling silver to get your desired alloy..
RELATED QUESTIONS
3) Sterling Silver is 92.5% pure silver. How many grams of Sterling Silver must be mixed... (answered by jorel1380)
British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many (answered by ankor@dixie-net.com)
Metal Alloys. In order for a metal to be labeled "sterling silver," the silver alloy must (answered by checkley77)
How many grams of pure silver must be mixed with 450grams of an alloy that is 10% copper... (answered by Edwin McCravy,filboi)
British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many... (answered by josgarithmetic)
British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many... (answered by ikleyn)
British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many... (answered by ankor@dixie-net.com)
British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many (answered by josmiceli)