Answer:
$9.20
Step-by-step explanation:
Hello, I think I can help You with this.
Step 1
find the total price of the sunscreen
Tany paid $10 + 8 % tax, it means she paid 108% of the $10, let's find that value using a rule of three
If
$10⇒100%
$x?⇒108%
the relation is
[tex]\frac{10}{100}=\frac{x}{108}\\ solve\ for\ x\\\frac{10*108}{100}=x\\x=\frac{1080}{100}\\ x=10.8[/tex]
she paid $10.80
Step 2
find the difference between $20 and $10.80 to know her change
change=$20-$10.80
change=$9.20
have a great day
