The park charges 1.50 per ride.
1. Louisa bought 15 ride tickets at 1.50 each.
Equation: C = Entry Fee + 1.50t
t = 15.
c = 30.75
30.75 = Entry Fee + 1.50(15)
30.75 = Entry fee + 22.50
Entry fee = 30.75 - 22.50
Entry fee = $8.25
2. Entry fee was calculated as 8.25 from #1.
Tickets are 1.50 each.
He can spend 22.
22 = 8.25 + 1.50t
Subtract 8.25 from both sides:
13.75 = 1.50t
Divide both sides by 1.50:
t = 13.75 / 1.50
t = 9.2
He can buy 9 tickets.
