Answer:
The original price was $25
Step-by-step explanation:
where p is the original price of the shirt, the sale price of the shirt is .80p.
the sale price of the shirt is p - 5.
so you can use this equation:
.80p = p - 5
now solve for p.
.80p - 1p = -5
-.20p = -5
p = 25.
so the original price was $25 and the sale price was $20.