The alloy contains 4 kg of copper and 6 kg of aluminum. What is the percentage of copper in the alloy?
| July 28, 2021 | education
The alloy, which contains 4 kg of copper and 6 kg of aluminum, weighs 10 kg as a whole (4 + 6 = 10).
If 10 kg is 100%, then we get that 1% is 10/100 = 0.1 kg.
To find out what percentage is 4 kg of copper from the entire piece of alloy, divide the amount of copper by one percent:
4 / 0.1 = 40%.
Answer: 40%.
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