Answer:
The Glee Club sold 90 Adult tickets.
Step-by-step explanation:
Let the number of Student ticket be x.
Let the number of Adult ticket be y.
Total Number of ticket sold is 150.
Hence,
Total Number of ticket = number of Student ticket + the number of Adult ticket
[tex]x+y=150 \ \ \ \ equation\ 1[/tex]
Also Given;
Student tickets cost $5.00 each.
Adult tickets cost $8.00 each.
Ticket Sales is $1,020.
hence,
[tex]5x+8y=1020 \ \ \ \ equation\ 2[/tex]
Now Multiplying equation 1 by 5 we get.
[tex]5\times(x+y)= 5\times150\\5x+5y=750\ \ \ \ equation \ 3[/tex]
Now Subtracting equation 2 from equation 3 we get;
[tex](5x+8y=1020)-(5x+5y=750)\\\\3y = 270\\y= \frac{270}{3}= 90[/tex]
Number of adult ticket sold is 90.
Also [tex]x+y=150\\x+90=150\\x=150-90=60[/tex]
Number of Student ticket sold is 60.
Hence, The Glee Club sold 90 Adult tickets.