How do you simplify ratio?

Ratio can be simplified by dividing both sides of the ratio by Highest Common Factor The highest common factor is the largest number that goes into both numbers of your ratio. example

Simplify 15 : 9

Ratio 15 : 9 Factors of 15 1, 3, 5, 15 Factors of 9. 1, 3, 9 Greatest Common Factor (G. C. F) 3 Divide both by G. C. F 15 : 3 = 5

9 : 3 = 3 Ratio in simplest form 5 : 3