SAT Math: Setting Up a System of Equations from a Word Problem

Lesson: Setting Up a System of Equations

After you watch the lesson above, try this practice problem
The admission tickets for an amusement park cost $7.50 each for a child and $15 for an adult. During one day, a total of 207 children and adults bought tickets to the park, and the total collected in ticket sales was $2,332.50. Solving which of the following systems of equations yields the number of children, , and the number of adults, , who bought tickets during the day?