Keywords:
System of equations, variables, cost, tickets, adults, children.
For this case we must solve a system of equations with two variables represented by the tickets of students and adults of a school production.
We define the variables according to the given table:
- a: Number of tickets sold to adults
- c: Amount of tickets sold to children.
We then have the following system of equations:
\(a + c = 67\\10a + 5c = 440\)
From the first equation, we clear the value of the variable c:
\(c = 67-a\)
Answer:
The value that could replace c in the table is:
\(c = 67-a\)
Option C
