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Simplify 20:90
The simplified ratio of 20:90 is 2:9. Free ratio calculator with GCD breakdown.
2:9
GCD of 20 and 90 is 10. Simplified: 20/10 : 90/10 = 2:9
How This Was Calculated
Simplification: Divide both terms by their GCD.A:B = (A/GCD) : (B/GCD)
Solving proportions: A/B = C/D — cross-multiply to find the missing value.
Scaling: Multiply both terms by the scale factor.
Quick Reference Table
| Input | Result |
|---|---|
| 20 / 85 | 4:17 |
| 20 / 88 | 5:22 |
| 20 / 89 | 20:89 |
| 20 / 91 | 20:91 |
| 20 / 92 | 5:23 |
| 20 / 95 | 4:19 |
Frequently Asked Questions
What is a ratio?
A ratio compares two quantities by division.
How do I simplify a ratio?
Divide both numbers by their greatest common divisor (GCD).
Can ratios have decimal values?
Yes, but simplified ratios are typically expressed as whole numbers.