your school sells tickets for its winter concert. Student tickets are $5 and adult tickets are $10. If your school sells 85 tickets and makes $600, how many of each ticket did they sell?
Let s be the number of student tickets and a be the number of adult tickets. s + a = 85; a = 85 - s Also, 5s + 10a = 600
Substituting a from the first equation 5s + 10(85 - s) = 600 -5s = -250 s = 50 a = 85 - 50 = 35 The school sold 50 student tickets and 35 adult tickets.
