Simplify
- Input
- 40 : 100
- Expected output
- 2 : 5
GCD = 20.
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simplify a ratio
A ratio is simplified by dividing both terms by their greatest common divisor.
GCD = 20.
2×12 ÷ 3.
It's the equality of two ratios. In A:B = C:X the ratios A/B and C/X are equal. Knowing three values, we find the fourth by cross-multiplication.
The ratio a:b corresponds to the fraction a/b, but a ratio can also compare parts of a whole (a:b:c).
Keep the proportion between ingredients when doubling or halving: 2:1 becomes 4:2.
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