An alloy with a mass of 250 kg contains 20 kg of copper. How many times is the mass of an alloy greater than the mass
| April 11, 2021 | education
An alloy with a mass of 250 kg contains 20 kg of copper. How many times is the mass of an alloy greater than the mass of copper contained in it? What part of the alloy is copper?
To find how many times the specified weight of the alloy is greater than the known mass of copper, we divide 250 kg of the alloy by 20 kg of copper in it.
We get:
250/20 = 12.5 times.
To determine the proportion of copper in a given alloy, divide the mass of copper by the weight of the alloy.
The result will be:
20/250 = 2/25 part.
So the percentage of copper in the alloy is equal to:
2/25 * 100% = 200/25 = 8%.
Answer: The mass of the alloy is 12.5 times greater. Copper makes up 2/25 of the total alloy.
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