Let number of child admission tickets=x and number of adult admission tickets =y
The total number of tickets is 176 so x + y=176.
We also know the total sales of the tickets= $1355.20. So the equation would be:
Now we can use the first equation we made and set it equal to y.
x +y= 176 => y=176-x
now since we know y= 176-x we can substitute it into this equation: 6.30x+9.50y=1355.20
Now we have=>
Solve for X
6.30x +1672- 9.5x=1355.20
x=99 And since we said X=child admission tickets => There were 99 child admission tickets sold