Question

Students sold rafle tickets to raise money for a field trip. The first 20 tickets sold costs $4 each. To sell more tickets,they lowered the price to $2 each. If they raise $216, how many tickets did they sell in all.

Answer 1

x=20
4x+2y=216
80+2y=216
2y=144
y=72
They sold 92 tickets in all