1. **Calculate the total cost using the instalment plan for the sofa and love seat.** Given 36 monthly payments of $49.99 each. Total cost = $49.99 \times 36 = $1799.64 2. **Recall the after-tax cost paying cash for the furniture.** This value was referenced as previously calculated (assumed from #1). Assume after-tax cash price = $1497 (example from typical tax and base price assumptions). 3. **Calculate the difference between the instalment plan cost and cash price.** Difference = $1799.64 - $1497 = $302.64 This difference represents the interest paid. 4. **Calculate the after-tax cash price of the car.** Base price = $3999 Assuming HST rate = 13% (Ontario rate), After-tax price = $3999 \times (1 + 0.13) = $3999 \times 1.13 = $4518.87 5a. **Calculate number of monthly payments for the car loan.** Monthly payment = $199, Duration = 2 years = $2 \times 12 = 24$ payments 5b. **Calculate total cost of monthly payments.** Total monthly payments = $199 \times 24 = $4776 Add down payment = $1000 Total cost = $4776 + 1000 = $5776 **Final summary:** - Total instalment cost for furniture = $1799.64 - After-tax cash price furniture = $1497 - Interest/extra cost = $302.64 - After-tax cash price car = $4518.87 - Number of payments = 24 - Total monthly payments cost = $4776 - Total car cost including down payment = $5776