A jazz concert brought in $171,000 on the sale of 8,400 tickets. If the tickets sold for $15 and $25 each, how many of each type of ticket were sold?

Answer 1

x + y = 8400

15x + 25y = 171,000

15x + 15y = 126,000

10y = 45,000

y = 4,500 of the $25 tickets

x = 3,900 of the $15 tickets