Answer:
The present value of the total amount that Brooke needs to have saved at the beginning of her son's first year of college is 31.959,13
Step-by-step explanation:
Tuition Fees after inflation at
Year 18 = 15000* ( 1+6.5%)18 = 46599.8157
Year 19 = 15000* ( 1+6.5%)19 = 49628.8037
Year 20 = 15000* ( 1+6.5%)20 = 52854.6759
Year 21 = 15000* ( 1+6.5%)21 = 56290.2299
Since discount rate = 10%
So discount factor = 1+r = 1+10% = 1.1
Since fees are paid at beginning of period hence
Present Value of Fees = Fees (year 18)/1.1^18 +Fees at Year 19/1.1^19 +Fees at Year 20/1.1^20 + Fees at year 21/1.1^21 = 46599.8157/1.1^18 + 49628.8037/1.1^19 + 52854.6759/1,1^20 + 56290.2299^21 = 31959