Question

Jayden bought a video game for $45.00. The sales tax was 5.5%. He had $ 50.00. What change did he get back?

Answer 1

In this problem the video game cost 45.00 dollars so this is 100% so now we can use a rule of 3 to calculate the 5.5

`\begin{gathered} 45\to100 \\ x\to5.5 \end{gathered}`

So the equation is:

`\begin{gathered} x=(45\cdot5.5)/(100) \\ x\approx2.5 \end{gathered}`

So the total cost will be:

`45+2.5=47.5`

So if he paid with 50 dollars then:

`50-47.5=2.5`

Hi will get back $2.5 dollars