You are planning to buy a condominium in 3 years and estimate that you will need $30,000 for a down payment. If the interest rate you can earn at the bank is 4%, and you can save $5,000 today, $7,500 at the end of the first year, and $10,000 at the end of the second year, discuss/explain how do you estimate the amount of money you will need to come up with at the end of the third year to have the $30,000 down payment.