Darell bought a microwave originally priced at $80 but on sale for 75% off. after 15% sales tax, what was the total cost?

$23

Step-by-step explanation:

Original Price = 80

75% discount means we find 75% of 80 and then subtract it from 80.

75% = 75/100 = 0.75

0.75 * 80 = 60

So, after discount price = 80 - 60 = $20

On top of that is 15% sales tax. So let's find 15% of $20 and add it to it.

15% = 15/100 = 0.15

0.15 * 20 = $3

After tax price = 20 + 3 = $23