I like to think of these like this.
What was the amount of the discount? 300 - 234 = $66 dollars.
66 is to 300 as ? is to 100?
This is how that question looks in an equation:
66/300 = x/100 Solve for x by cross multipying.
66 x 100 = 300 x
660 = 300 x
x = 22
The discount amount on the tablet is 22% off the regular price.
Check it!
300 x .22 = $66 dollars off. 300 - 234 = $66 off.
Yes! It checks.
