Question

18 of what number is $540?And show how you got the answer.

Answer 1

540/x=100/18
(540/x)*x=(100/18)*x - we multiply both sides of the equation by x
540=5.5555555555556*x - we divide both sides of the equation by (5.5555555555556) to get x
540/5.5555555555556=x
97.2=x
x=97.2

now we have:
18% of 540=97.2