SOLUTION: Please tell me HOW TO WRITE THE EQUATION FOR THIS PROBLEM: The Alexanders bought 9 movie tickets for a total cost of $30.00. Each child's ticket costs $2 and each adult's ticket

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Question 620461: Please tell me HOW TO WRITE THE EQUATION FOR THIS PROBLEM:
The Alexanders bought 9 movie tickets for a total cost of $30.00. Each child's ticket costs $2 and each adult's ticket costs $4. How many child's tickets did the Alexanders buy?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

The Alexanders bought 9 movie tickets,highlight%28x%29Adult and highlight%289-x%29Child's tickets for a total cost of $30.00. 

Each child's ticket costs $2 and each adult's ticket costs $4. 

How many child's tickets did the Alexanders buy?

  $4x + $2(9-x) = $30

       2x = 12

        x = 6, the number of adult tickets.  3 child's tickets

CHECKING our Answer***

   $24 + $6 = $30