Chapter 7.6, Problem 16E

To determine

To find: The total cost of the food bill.

Answer to Problem 16E

The total cost of the food bill is $\$30.25$ .

Explanation of Solution

Given information: Food bill- $\$25$ , sales tax- $6\%$ and tip- $15\%$ .

Calculation: The cost of the food bill= $\$25$ , The rate of sales tax = $6\%$ and The tip- $15\%$ .

The amount of sales tax = The cost of the food bill $\times$ Rate of sales tax.

  $\begin{array}{l}=\$25\times 6\%\\ =\$25\times \frac{6}{100}\\ =\$25\times .06\\ =\$1.5\end{array}$

The amount of the tip $=$ The cost of the food bill $\times$ Rate of the tip

  $\begin{array}{l}=\$25\times 15\%\\ =\$25\times \frac{15}{100}\\ =\$25\times 0.15\\ =\$3.75\end{array}$

The amount of sales tax and the amount of tip should be added with the cost of the food bill.

Let’s find the total cost of the food bill,

  $\begin{array}{l}=\$25+\$1.5+\$3.75\\ =\$30.25\end{array}$

Hence, the total cost of the food bill is $\$30.25$ .