Question

14. More on the time value of money Aa Aa Lloyd is a divorce attorney who practices law in Florida. He wants to join the American Divorce Lawyers Association (ADLA), a professional organization for divorce attorneys. The membership dues for the ADLA are $600 per year and must be paid at the beginning of each year. For instance, membership dues for the first year are paid today, and dues for the second year are payable one year from today. However, the ADLA also has an option for members to buy a lifetime membership today for $5,000 and never have to pay annual membership dues. Obviously, the lifetime membership isn't a good deal if you only remain a member for a couple of years, but if you remain a member for 40 years, it's a great deal. Suppose that the appropriate annual interest rate is 7.4%. What is the minimum number of years that Lloyd must remain a member of the ADLA so that the lifetime membership is cheaper (on a present value basis) than paying $600 in annual membership dues? (Note: Round your answer up to the nearest year.) 12 years 19 years 21 years 17 years In 1626, Dutchman Peter Minuit purchased Manhattan Island from a local Native American tribe. Historians estimate that the price he paid for the island was about $24 worth of goods, including beads, trinkets, cloth, kettles, and axe heads. Many people find it laughable that Manhattan Island would be sold for $24, but you need to consider the future value (FV) of that price in more current times. If the $24 purchase price could have been invested at a 5.25% annual interest rate, what is its value as of 2012 (386 years later)? $10,438,579,954.25 $11,981,674,382.27 $7,715,472,140.10 $9,077,026,047.17

Answer 1

1)	For the two options to be equal, their PVs should be
	equal when discounted with 7.4%.
	So, 5000 = 600*PVIFA(7.4,n)
	where n is the number of years taken for the PV of 600
	to equal $5000.
	Solving for n
	PVIFAD(7.4,n) = 5000/600 = 8.3333
	Annuity factor for 12 years = (1.074^12-1)*1.074/(0.074*1.074^12) =	8.3515
	Annuity factor for 13 years = (1.074^13-1)*1.074/(0.074*1.074^13) =	8.7761
	As the factor obtained by dividing 5000/600 of 8.3333 is near
	to the factor for 12 years, the answer is	12 Years
2)	Value as of 2012 = 24*1.0525^386 =	$                 9,07,70,26,047.17