A pair of $120 shoes was discounted 20 percent. A customer had a coupon for an additional $5 off. What was the final price of
the shoes?

$90
$91
$92
$96

$91

Step-by-step explanation:

First, you want to find out what the price is after the discount. 20% was taken off, so 80% of the original amount remains. You multiply 120 by 0.8 (80% in decimal form) to get $96. Then, the customer has an additional five dollars off, so you subtract 5 from 96. Therefore, the final price of the shoes is $91.

except a rational number. : )