Answer: 40
Explanation:
Let x be the number of adult tickets sold.
Given: Cost of each student ticket = $5
Cost of each adult ticket = $7
Cost of x adult tickets = 7x
If 44 student tickets were sold, money they got from it = 44 x (Cost of each student ticket)
= 44 x 5
= $220
Now, Total money made = 220+7x =500

Hence, the number of adult tickets sold =40