Aluminum is 80% alloy, the rest is copper. aluminum in the alloy is 300 grams more than copper, what is the mass of the alloy?

univerkov | February 5, 2021 | education

Let us denote by x the mass of the alloy. Consequently, in this layer, the mass of aluminum is 0.8 * x, and the mass of copper = 0.2 * x, since 100% – 80% = 20%.

Let’s compose and solve the equation:

0.8 * x – 0.2 * x = 300;

0.6 * x = 300;

x = 300 / 0.6;

x = 500.

Answer: alloy weight = 500 grams.

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