...they sold 250 more student tickets than non student tickets...
Let the number of non-student tickets be x
Then the number of student tickets is x+250
Money Money
Type Number from from
of of EACH ALL
ticket tickets ticket tickets
-------------------------------------------
student x+250 $5 $5(x+250)
non-student x $9 $9x
-------------------------------------------
TOTAL = $7018
The equation comes from the "Money from ALL tickets" column.
5(x+250) + 9x = 7018
5x + 1250 + 9x = 7018
14x + 1250 = 7018
14x = 5760
x = 412 = the number of non-student tickets.
he number of student tickets is x+250, which equals
412+250 = 662
So 662 student tickets.
Checking: 662 student tickets is $3310 and 412 non-student is $3708
662 is 250 more than 412
And indeed $3310 + $3708 = $7018
Edwin