Answer:
The Glee Club sold 90 Adult tickets.
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

Also Given;
Student tickets cost $5.00 each.
Adult tickets cost $8.00 each.
Ticket Sales is $1,020.
hence,

Now Multiplying equation 1 by 5 we get.

Now Subtracting equation 2 from equation 3 we get;

Number of adult ticket sold is 90.
Also

Number of Student ticket sold is 60.
Hence, The Glee Club sold 90 Adult tickets.