Final answer:
Lisa paid a total of $18,268.64 for the camper, including her down payment and monthly payments. She paid $868.64 in interest on the loan, which was the difference between the amount borrowed and the total amount she paid back.
Step-by-step explanation:
To calculate the total amount Lisa paid for the camper, we need to add the down payment and all the monthly payments she made.
Total Paid for Camper
Lisa's down payment: $3500
Monthly payments: $307.68 for 4 years (4 years * 12 months/year = 48 months)
Total from monthly payments: 307.68 * 48 = $14,768.64
Total paid (down payment + monthly payments): $3500 + $14,768.64 = $18,268.64
Interest Paid on Loan
Amount borrowed (price of camper - down payment): $17,400 - $3500 = $13,900
Total amount paid for the loan (monthly payments total): $14,768.64
Interest paid: Total paid for loan - Amount borrowed = $14,768.64 - $13,900 = $868.64
Lisa paid a total of $18,268.64 for the camper and $868.64 in interest over the course of the loan.