Answer:
The number of adult tickets sold was 300 and that of child's ticket sold is 900.
Step-by-step explanation:
Let us assume that the ticket sales at Wednesday's game are x number adult and y number child's tickets.
Therefore, as per given conditions, we can write, y = 3x .......... (1)
Again, each adult ticket cost $20 and each child's ticket costs $10 and there was a $15000 ticket sale.
So, 20x + 10y = 15000
⇒ 2x + y = 1500 ......... (2)
Now, solving equations (1) and (2) we get,
2x + 3x = 1500
⇒ 5x = 1500
⇒ x = 300 and y = 3x = 900
Therefore, the number of adult tickets sold was 300 and that of child's ticket sold is 900. (Answer)