# Coins

The money - coins are minted from the hardest bronze, which contains copper and tin in a ratio of 41:9. How much copper and tin are in 2kg of bronze money?

## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**algebra**- system of equations
- expression of a variable from the formula
**basic functions**- ratio
- inverse proportion
- direct proportionality
**numbers**- fractions

### Units of physical quantities:

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