We have been given that you went to Walmart and spend $75. Of the total bill, $45.50 included non-taxable items.
Let us find the amount of taxable items by subtracting amount of non-taxable items from total bill.
[tex]\text{Amount of taxable items}=\$75-\$45.50[/tex]
[tex]\text{Amount of taxable items}=\$29.50[/tex]
We have been given that the rate of tax is 7.5% to the taxable items. To find the amount of tax, we will find 7.5% of $29.50.
[tex]\text{Amount of tax}=\$25.50\times \frac{7.5}{100}[/tex]
[tex]\text{Amount of tax}=\$25.50\times 0.075[/tex]
[tex]\text{Amount of tax}=\$2.2125[/tex]
Final amount of bill would be amount of bill plus amount of tax.
[tex]\text{Final amount of bill}=\$75+\$2.2125[/tex]
[tex]\text{Final amount of bill}=\$77.2125[/tex]
Therefore, final amount of bill would be [tex]\$77.2125[/tex].
