An alloy of zinc, tin and copper contains 90% of copper, 7% of zinc and 3%...

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An alloy of zinc, tin and copper contains 90% of copper, 7% of zinc and 3% of tin. A second alloy of copper and tin only is melted with the first, and the mixture contains 85% of copper, 5% of zinc and 10% of tin. Find the percentage of tin in the second alloy. 1. 27.5% 2. 55% 3. 22.5% 4. 45% 5. 37% An alloy of zinc, tin and copper contains 90% of copper, 7% of zinc and 3% of tin. A second alloy of copper and tin only is melted with the first, and the mixture contains 85% of copper, 5% of zinc and 10% of tin. Find the percentage of tin in the second alloy. 1. 27.5% 2. 55% 3. 22.5% 4. 45% 5. 37%

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Solution 1 Say M and N are the total volumes of first and seco... View the full answer