4. At an amusement park, the cost for an adult admission is a, and for a child the cost is c. For a group of six
that included two children, the cost was $325.94. For a group of five that included three children, the cost was
$256.95. All ticket prices include tax. Write a system of equations, in terms of a and c, that models this
situation. Use a system of equations to determine the exact cost of each type of ticket algebraically.