Final answer:
To determine if leasing or purchasing is better, calculate the Present Worth of both options. Compare the PW at different interest rates to find the range where leasing is preferred. Calculate the PW for different down payments to determine if paying more or less is better.
Step-by-step explanation:
To determine whether leasing or purchasing is the preferred alternative over a range of purchase financing nominal interest rates, we need to calculate the Present Worth (PW) of both options. The formula for PW is:
PW = Cost of Vehicle + Cost of Operation
The cost of operation in this case is the sum of the monthly payments for leasing or purchasing, the down payment, and the final repair cost. We can then compare the PW of leasing and purchasing at different interest rates to find the range where leasing is preferred.
To determine whether paying more or less down payment is better when the nominal interest rate for purchase financing is 4%, we can calculate the PW of both scenarios and compare them. Considering the Monthly Minimum Acceptable Rate of Return (MARR) of 8% per year compounded monthly, we can determine which scenario has a higher PW.