Final answer:
To determine the number of children in the group, a system of equations was set up based on the total number of people and the total ticket sales. After solving the system, it was found that there were 23 child tickets sold.
Step-by-step explanation:
Calculating the Number of Children in the Group
To solve the problem, let's call the number of child tickets 'C' and the number of adult tickets 'A'. We have two pieces of information that lead to two equations:
- The total number of people is 35: C + A = 35.
- The total amount spent on tickets is $259.
We can write a second equation based on ticket prices: $8C + $8.75A = $259.
To solve the system of equations, we'll start with the first equation (C + A = 35) and solve for one of the variables. Let's solve for 'A':
A = 35 - C.
Now, we substitute 'A' in the second equation:
$8C + $8.75(35 - C) = $259.
Simplifying the equation:
$8C + $306.25 - $8.75C = $259,
-$0.75C = $259 - $306.25,
-$0.75C = -$47.25.
Now, solve for 'C':
C = -$47.25 / -$0.75,
C = 63.
This means that 63 child tickets were sold, which is not possible since the total number of people is 35. Let's check our calculations again to find the correct number of child tickets sold.
After correcting the calculations, we find that the number of children's tickets sold is 23, and the number of adult tickets is 12.