Respuesta :

8 is 45% of a number
18 is 45% of x
18 = 45% of x
18 = 0.45 * x

Now, to isolate x, you divide both sides of the equation by 0.45.

18 / 0.45 = 0.45*x /0.45
x = 40

So, 18 is 45% of 40. Hope this helps! :)
apologiabiology
18=45% of a value
divide both sides by 9
2=5% of a value
times 20 both sides
40=100% of a value
de value is 40