Question

7.5% of what number is 12?

Answer 1

First, let's create an equation for this problem. Let x repersent the unknown number. 
$\frac{7.5}{100}$ =$\frac{12}{x}$

Next, you would cross multiply. 
7.5x = 1,200

The last step would be to isolate the x. To do this, you would divide both sides by 7.5. 
x = 160

12 is 7.5% of 160. 

I hope this helps!