<PRE><B>Question 418766</B>
Let x = # student tickets sold
Let y = # non-student tickets sold
Therefore, x + y = 1500 which is the total number of tickets sold

If x = #student tickets sold, then 3x = revenue from student tickets
If y = #non-student tickets sold, then 5y = revenue from non-student tickets
Therefore 3x + 5y = 5000 which is the total revenue from all tickets

From the first equation: x = 1500 - y
Therefore:

3(1500 - y) + 5y = 5000
4500 - 3y + 5y = 5000
4500 + 2y = 5000
2y = 500
y = 250 which is the number of non-student tickets

Therefore x + 250 = 1500
x = 1250 which is the number of student tickets
and 3x = 3 * 1250 = $3750 is the total revenue from student tickets

Answer: $3750
</PRE>