Question

sunscreen is priced at $10 per bottle plus 8% tax if Tanya purchases a bottle of sunscreen with a $20 bill then what is her change

Answer 1

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

$\frac{10}{100}=\frac{x}{108}\\ solve\ for\ x\\\frac{10*108}{100}=x\\x=\frac{1080}{100}\\ x=10.8$

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

Answer 2

$9.20

10*1.08 is 10.80. 20 - 10.80 is 9.20.