SOLUTION: Jose bought nine movie tickets for a total of $54. Adult tickets cost eight dollars each and child tickets cost $3.50 each. How many adult tickets did he buy?

Algebra ->  Equations -> SOLUTION: Jose bought nine movie tickets for a total of $54. Adult tickets cost eight dollars each and child tickets cost $3.50 each. How many adult tickets did he buy?      Log On


   

Question 1069772: Jose bought nine movie tickets for a total of $54. Adult tickets cost eight dollars each and child tickets cost $3.50 each. How many adult tickets did he buy?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.A%2BC=9
28A%2B3.5C=54
From 1,
A=9-C
Substituting,
8%289-C%29%2B3.5C=54
72-8C%2B3.5C=54
-4.5C=-18
Now solve for C then use either equation to solve for A.