Respuesta :
Answer:
$21
Step-by-step explanation:
- Step one we find what 30% of $30 is, percentage is a number over 100;
- [tex]\frac{30}{100}*30=9[/tex] , so 9 dollars
- Now this is the amount of the discount, so we take it out of $30
- So $30-$9=$21
- That's the discount