Irene R. answered 02/02/20
BS in Mechanical Engineering and Certified math teacher for 13 years
Since the dress was discounted down to $126 and this was the amount paid, the $126 actually represents 3/4 of the original price.
We can write and solve the following equation to find the original price:
3 x = 126
4
To solve, multiply both side of the equation by the reciprocal of 3/4 or 4/3:
4 * 3 x = 126 * 4
3 4 3
x = $168
The original price was $168