Tickets for the homecoming dance cost $20 for a single ticket or $35 for a couple. Ticket sales totaled $2280, and 128 people attended. How many tickets of each type were sold? Be sure to define your variables first.
x - the number of single ticket
y - he number of couple ticket
"x + 2y=128 \\to x = 128-2y"
"20x+35y=2280"
"20(128-2y)+35y=2280"
"2560-40y+35y=2280"
"5y=280 \\to y = 56 \\space \\space and \\space \\space x = 128-2y=16"
Answer
56 - the number of single ticket
16 - the number of couple ticket
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