Question

The cost of a parking permit consists of a one-time administration fee plus a monthly fee. A permit purchased for 12 months costs $660. A permit purchased for 15 months costs $810.

What is the administration fee?

$50
$54
$55
$60
.

Answer 1

D) $60

Explanation:

EDGE

Answer 2

D.) $60

Explanation:

First, use the given information to calculate the monthly charge:

15 months-12 months = 3 months

$810-$660=$150

So, 3 months of parking costs $150 which translates to $50 a month. Using this information and the original given information, the administration fee can be calculated:

12($50)+x=$660

$600+x=$660

$600+x-$600=$660-$600

x=$60

and

15($50)+x=$810

$750+x=$810

$750+x-$750=$810-$750

x=$60

The administration fee is $60