Sterling silver is 5% pure silver. How many grams of sterling silver must be mixed to a 90% silver alloy to obtain a 500g of a 91% silver alloy?

Sterling silver is 5% pure silver. How many grams of sterling silver must be mixed to a 90% silver alloy to obtain a 500g of a 91% silver alloy?

A 100

B 150

C 200

D 250

Solution

Correct Answer: Option C