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

the answer is 60 dollars

Answer 2

The administration fee is $60. Option D.

Explanation:

A permit purchased for 12 months costs = $660

A permit purchased for 15 months costs = $810

The difference in 3 months costs = 810 - 660

= $150

Cost of one month permit = 150 ÷ 3 = $50

Monthly fees of the parking permit = $50

Yearly fees of the parking permit = $50 × 12 = $600

One time administration fee = 660 - 600 = $60

The administration fee is $60. Option D.