The alloy of copper and zinc contains 12% copper. The mass of the alloy is 1200 g. How much zinc is in the mixture?
| September 23, 2021 | education
Rule: to find a few percent of a number, you must divide that number by one hundred and multiply by the number of percent.
1) Find how much copper is in the alloy:
(1200: 100) * 12 = 144 (g);
2) Find how much zinc is in the alloy:
1200 – 144 = 1056 (g).
Answer: in the alloy 1056 g of zinc.
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