Question

Price of a pair of shoes is $\$42$ before adding sales tax. If the final billing amount with tax is $\$43.68$, find the percentage sales tax.

• A. $1.68\%$
• B. $3.85\%$
• C. $4\%$
• D. $4.6\%$

Answer 1

The correct option is C $4\%$

Here tax per $\$100$ cost is in proportional relationship.
Final billing amount $=\$43.68$
Price of shoes before tax $=\$42$
Tax amount $=$ Billing amount $-$ Price of shoes before tax
$=43.68-42$
$=\$1.68$

Percentage of tax $=\frac{\text{Tax amount}}{\text{Cost before tax}}\times 100$
$=\frac{1.68}{42}\times 100$
$=\frac{168}{42}$
$=4$
$=4$
The percentage of sales tax is $4\%$