An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing
300
grams of an alloy that contains
72%
copper with
20
grams of pure copper. How many grams of copper are in the resulting mixture? What percentage of the resulting mixture is copper?
+2178
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 300 grams of an alloy that contains 72% copper with 20 grams of pure copper. How many grams of copper are in the resulting mixture? What percentage of the resulting mixture is copper?
Which Ingredient Amount Cu Amount Not Cu
Alloy 1 216 84
Pure Cu 20
New Alloy 236 84
Amt cu in resulting alloy = 236
Pctg cu in resulting alloy = (236) / (236+84) = 0.7375 = 74%
.
