Because we're on top.
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?
So you write 2 equations12M + A = 66015M + A = 810Then you multiply the top in order to eliminate A(12M+A=660) -1-12M-A= -66015M + A = 8103M=150M=150/3Monthly Fee = $50 you plug it in the equation12(50) + A=660600 + A = 660A= 660 - 600A (Administration Fee) = $60
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.
ReplyDeleteWhat is the administration fee?
So you write 2 equations
Delete12M + A = 660
15M + A = 810
Then you multiply the top in order to eliminate A
(12M+A=660) -1
-12M-A= -660
15M + A = 810
3M=150
M=150/3
Monthly Fee = $50
you plug it in the equation
12(50) + A=660
600 + A = 660
A= 660 - 600
A (Administration Fee) = $60