Jesse D. answered 04/02/19
Patient and Experienced Mathematics and Spanish Tutor
The first we need to do is assign variables to what our "unknowns" are. Let's say the number of adult tickets will be "A" and the number of child's tickets will be "C". We will use two equations to solve this problem
First, we know that each adult ticket is $8.90 and each child ticket is $5.30. When we add up the sales total for both types of tickets, the total sale is $928. We can represent this with the following equation:
$8.90A + $5.30C = $928
Next, we know that if we multiply the number of child's tickets by 3, we will get the number of adult tickets:
3 * C = A
Now, we can substitute 3 * C in for "A" in our first equation and solve:
8.9 (3C) + 5.3C = 928
26.7C + 5.3C = 928
32C = 928
C = 29
There were 29 child's tickets sold that day. Please feel free to reach out with any questions you have!