Alloy of copper and tin contains 42% copper. How much copper and tin is contained in the alloy weighing: 140gr.10kg. 5.6kg.
| May 18, 2021 | education
The entire alloy contains 100%.
Since the alloy contains 42% copper, the percentage of tin will be:
100% – 42% = 58%.
In order to express the weight, the total weight of the alloy must be multiplied by the percentage.
1) For 140 grams.
140 * 42% / 100% = 140 * 0.42 = 58.8 grams of copper.
140 * 58% / 100% = 140 * 0.58 = 81.2 grams of tin.
2) For 10 kg.
10 * 0.42 = 4.2 kg of copper.
10 * 0.58 = 5.8 kg of tin.
3) For 5.6 kg.
5.6 * 0.42 = 2.352 kg of copper.
5.6 * 0.58 = 3.248 kg of tin.
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