Answer:
The answer is $14,898.07
Step-by-step explanation:
Assume that the cost of money (discount rate) of 7.25% is on annual basis.
Present value (PV) of the installment plan is:
PV = Down payment + PV(first installment) + PV(second installment)
= $8,200 + $4,200 / (1 + 7.25%) + $3,200 / (1 + 7.25%)^2 = $14,898.07
Obviously, the three payments option is more lucrative than the 100% down payment one.