Backpack is normally $64.99, put on sale it is marked down to $45.49 what percent off is the sale price

Answer:
The percent off on the sale price is 30%.
Step-by-step explanation:
Marked up price = $64.99
marked down Price = $45.49
Let us assume the off percentage = k%
Now, the Amount off on the sale = Marked up price - Marked down price
= $64.99 - $45.49 = $19.5
⇒ k% off on Marked up Price $64.99 = $19.5
or, [tex]\frac{k}{100} \times 64.99 = 19.5\\\implies k = \frac{19.5 \times 100}{64.99} = 30[/tex]
or, k = 30%
Hence, the percent off on the sale price is 30%