Tin is 10% bronze, the rest is copper. How many kilograms of copper you need to take to get 28 kg of bronze.
| April 9, 2021 | education
1. Tin:
Bronze = 10%.
Copper = 100% – 10% = 90%.
2. Let’s make a proportion to find how many kilograms of copper must be taken to get 28 kilograms of bronze.
28 kilograms – 10%.
x kilogram – 90%.
Hence,
x = 90 * 28: 10 = 252 kilograms of copper.
Answer: to get 28 kg of bronze, you need to take 252 kg of copper.
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