The alloy contains 3 parts of copper and 2 parts of zinc. : how much zinc if copper is 180g?

univerkov | August 11, 2021 | education

Let’s solve the problem using the proportion:

3: 2 = 180: x.

To find the unknown extreme term of the proportion, it is necessary to multiply the average terms of the proportion and divide their product by the known extreme term:

x = 180 × 2: 3;

x = 120 (g) – zinc.

Answer: 120 g of zinc.

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