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An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 100 grams of an alloy that contains 28% copper
with 28 grams of pure copper.
Answer the questions below. Do not do any rounding.
How many grams of copper are in the resulting mixture?
what percentage of the resulting mixture is copper?
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1. There are = 28 + 28 = 56 grams of copper in the resulting alloy.
2. The copper percentage is 56/(100+28) = = 0.4375 = 43.75% in the resulting alloy.
On alloy mixture problems see the lesson
- Word problems on mixtures for alloys
in this site.
For mixture problems see all associated lessons with it.