Problem
Sarah saved 12.00 dollars buying clothes. The cloth was on sale for 30% off. What was the original price?
Solution
For this case we know that 12.00 represent the 30% of the total price so we can set up the following proportional rule:
12/30 = x/100
And solving for x we got:
x= 100 (12/30)= 40$
And then the best answer would be:
40.00$