Answer:
Find out the what was the original price of her purchase .
To prove
Let us assume that the original price of her purchase be x.
As given
A store is having a 20%-off sale on all merchandise. If Mai buys one item and saves $13 .
20% is written in the decimal form.
[tex]= \frac{20}{100}[/tex]
= 0.20
Than the equation becomes
x × 0.20 = 13
[tex]x = \frac{13}{0.20}[/tex]
x = $65
Therefore the original price of her purchase is $65.
