Step-by-step explanation:
since $63.75 was the price discounted by 15%, she only paid 100% - 15% = 85% of the original price.
so,
$63.75 = 85%
1% = 85%/85 = 63.75/85
100% (the original price) = 100×1% = 100×63.75/85 =
= 6375/85 = 1275/17 = $75
the original price was $75