Glencoe Math: Course 2, Volume 1
GM
Glencoe Math: Course 2, Volume 1 View details
6. Sales Tax, Tips, and Markup
Continue to next subchapter

Exercise 4 Page 155

Start by calculating the dollar amount of the tax by using the percent equation.

About $ 47.33

Practice makes perfect

We want to find the total cost of the shoes. Let's start by calculating the dollar amount of the tax. We can do this by using the percent equation. part = percent * whole We are given that the shoes cost $ 46 plus 2.9 % tax. Let t represent the dollar amount of the tax. t = 2.9 % * $ 46Before solving the equation we got, we need to write the percent as a decimal. We can do this by ignoring the percent symbol and moving the decimal point two places to the left.

percent as decimal: 0.029

We got that 2.9 % is equal to 0.029. t = 2.9 % * $ 46 [0.3em] ⇓ [0.3em] t = 0.029 * $ 46 Finally, we will solve the equation for t. For simplicity, we will omit the dollar symbol.

t = 0.029 * 46
t = 1.334
t ≈ 1.33

We found that t≈ 1.33 is a solution to the equation. This means that the dollar amount of the tax, rounded to the nearest cent, is about $ 1.33. Now we can calculate the total cost of the shoes, which is the regular price of the shoes plus the tax. Total cost ≈ $ 46 + $ 1.33 = $ 47.33 The total cost of the shoes is about $ 47.33.