A store offers two payment plans. Under the installment plan, you play 25% down and 25 % of the purchase price in each of the next 3 years. If you pay the entire bill immediately, you can take a 10% discount from the purchase price.
Which is better deal if you can borrow or lend funds at a 5% interest rate?
How will your answer change if the payments on the 4-year installment plan do not start for a full year?