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 how
many grams of copper are in the resulting mixture? What percentage of the
resulting mixture is copper.
| grams | percentage | grams of
|of metal| of copper | copper
-------|--------|--------------|------------
alloy | 100 | 28% = 0.28 |100(0.28)=28
-------|--------|--------------|---------
copper | 28 | 100% = 1.00 | 28(1.00)=28
-------|--------|--------------|------------
total | 128 | | 56
Edwin