Question

Reduce the ratio to its lowest form 50:90

Answer 1

5:9
You need to find the greatest common factor and divide each side by it.
In this case it is 10... 50/10 = 5   90/10 = 9
So 50:90 = 5:9

Answer 2

10:18
divided both by 5 because that is for both the LCF besides 2