Question

A pair of shoes costs $30.99 and the sales tax is 5%. Use the formula C = p + rp to find the total cost of the shoes, where C is the total cost, p is the price, and r is the sales tax rate.

Answer 1

32.49

Explanation:

First you must set up the probably and plug in the variables into the formula. Sthe formula would turn into the equation: C=30.99 (c for cost) + .5 [r for tax] (30.99) c for cost. Then you will solve the equation:

1. C= 30.99+.5(30.99)

2. C= 30.99+ 1.50

3. C= 32.49

Answer 2

The total cost of the shoes is $32.5395.

Explanation:

The equation that you must use is
`C=p+p* r`. Keep in mind that percentage number is the number divided by 100 in real numbers. For example, 5% equals 0.05. So, instead of using the term 5%, you must use 0.05.

Now, let's replace the variables in the equation with the data that the problem gives.

`C=p+p* r`

`C=(30.99)+(30.99)* (0.05)`

`C=30.99+1.5495`

The term $1.5495 refers to the tax that must be paid for the shoes. The total cost is the sum of the price and the tax.

`C=32.5395`

Thus, the total cost of the shoes is $32.5395.