The alloy contains 18% copper. How many kilograms of alloy must be taken so that it contains 27 kilograms of copper.
July 22, 2021 | education
| The easiest way to solve this problem is using the proportion method. If the alloy contains 18% copper, then 100% of the alloy will weigh the number X. Let’s compose and solve the proportion:
18% – 27;
100% – H.
Where from:
X = 100 x 27/18;
X = 150 (kg).
Answer: in order for this alloy to have 27 kg of copper, you need to take 150 kg.
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