SOLUTION: adult ticket prices are 8 dollars kid ticket prices are 5 dollars if 500 tickets were sold and the total amount of the tickets equals 3475 dollars, how do i find how many adult and

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Question 203232: adult ticket prices are 8 dollars kid ticket prices are 5 dollars if 500 tickets were sold and the total amount of the tickets equals 3475 dollars, how do i find how many adult and child ticket prices were sold?
I got the answer I came up with 325 adults, and 175 kids, but HOW do I show the work, how do I set up the equation. it was on my job interview today... i felt really stupid

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Let
x = # of adult tickets sold

y = # of child tickets sold


Since "500 tickets were sold" total, this means that


Also, because "adult ticket prices are 8 dollars kid ticket prices are 5 dollars", and "the total amount of the tickets equals 3475 dollars", we get the second equation





So we have the system of equations:





Start with the first equation.


Subtract from both sides.


Rearrange the terms and simplify.


-------------------------------------------


Move onto the second equation.


Now plug in .


Distribute.


Combine like terms on the left side.


Subtract from both sides.


Combine like terms on the right side.


Divide both sides by to isolate .


Reduce.


-------------------------------------------


Since we know that , we can use this to find .


Go back to the first equation.


Plug in .


Subtract from both sides.


Combine like terms on the right side.


So the solutions are and .


This means that 325 adult tickets and 175 child tickets were sold.

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