Chapter 7.6, Problem 5P

To determine

The solution of the sales tax rate.

Answer to Problem 5P

  $6\%$ .

Explanation of Solution

Given information:

While on vacation, Allison noted that a $\$5.50$ breakfast actually cost $\$5.83$ because of the sales tax.

Calculation:

From the given information, find the sales tax rate are as shown below:

Allison noted that a $\$5.50$ breakfast actually cost $\$5.83$ because of the sales tax.

Find the amount paid in tax:

  $\begin{array}{l}5.83-5.50\\ =0.33\end{array}$

Find the percent of decrease by using the formula:

  $\%$ of tax rate $=\frac{\text{tax amount}}{\text{original amount}}$

  $\frac{0.33}{5.50}=0.06=6\%$

Thus, the solution is $6\%$ .