# If equal quantities of alloys are melted to form a third alloy C, find the ratio of Gold and Copper in C ?

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A and B are two alloys of Gold and Copper prepared by mixing metals in the ratio 7:2 and 7:11 respectively.
If equal quantities of alloys are melted to form a third alloy C, find the ratio of Gold and Copper in C ?

posted Jun 10, 2015

+1 vote

7:5
Let's take 18 grams of alloy A and 18 grams of B. They contain 2*7+7 = 21 grams gold and 2*2+11=15 grams copper => 7:5

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