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11-8.

When a family with two adults and three children bought tickets for an amusement park, they paid a total of . The next family in line, with four children and one adult, paid . Find the adult and child ticket prices by writing and solving a system of equations.

Write an equation for each family, where x = the price per adult and y = the price per child.

The equation for the first family is:
Write the equation for the other family and solve the system.