Copper is 2’5 mass of the alloy, how many grams of copper is contained in 320 grams of the alloy.
| May 13, 2021 | education
Copper makes up 2/5 of the alloy mass.
Alloy – 320 grams.
1. To find the fraction of a number, you need to multiply the entire amount of the alloy by the fraction.
320 * 2/5 = 640/5 = 128 grams.
2. Second way. We need to understand what 2/5 of the number is.
2/5 – this whole number was divided into 5 parts, but only 2 was taken.
That is, 320: 5 * 2 = 64 * 2 = 128 grams
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
