1. Factorise 72 and 90.
2 Find the greatest common factor.
3. Divide both, 72 and 90 by their gcf.
So,
72 = 2*2*2*3*3 90 = 2*3*3*5 and their gcf = 2*3*3
Then 72/gcf = 2*2 = 4 and 90/gcf = 5
So 72/90 = 4/5
Wiki User
∙ 14y ago40:72 = 5:9
It simplifies as a ratio of 1:4
7.2 to 10 = 72 to 100 = 18 to 25
90% of 72 = 90% * 72 = 0.9 * 72 = 64.8
simplify the ratio 18b^2 to 45b
90-18 = 72
18
72 = 72/1. You can multiply the numerator and denominator of this ratio by any non-zero number to get an equivalent ratio.
No.
90 - 72 = 18
(72/90) * 100
don't think you can simplify it