Question

Tiffany needs to rent a car while on vacation. The rental company charges $18.95, plus 17 cents foreach mile driven. If Tiffany only has $40 to spend on the car rental, what is the maximum number ofmiles she can drive?

Answer 1

Let x be the number of maximum miles that Tiffany can drive, then we can set the following equation:

$18.95+0.17x=40.$

Subtracting 18.95 from the above equation we get:

$\begin{gathered} 0.17x=40-18.95, \\ 0.17x=21.05. \end{gathered}$

Dividing by 0.17 we get:

$x=\frac{21.05}{0.17}=123.8235294.$

Now, since the cost is for each mile, then we have to round to the nearest lowest whole number, therefore, she can drive for 123 miles.

Answer: 123 miles.