An aggressive stockbroker claims an ability to consistently earn 12% per year on an investor’s money. A client invests $10,000 now, $30,000 three years from now, and $8000 per year for 5 years starting 4 years from now. (a) How much money can the client withdraw every year forever, beginning 20 years from now? (b) What is the cap­italized cost of the client’s investments if the $8000 per year is expected to continue for an unspecified time into the future?

What will be an ideal response?


(a) Find future value in year 19, then multiply by i

F19 = 10,000(F/P,12%,19) + 30,000(F/P,12%,16) + 8000(F/A,12%,5)(F/P,12%,11)
= 10,000(8.6128) + 30,000(6.1304) + 8000(6.3528)(3.4785)
= $446,826

A = 446,826(0.12)
= $53,619 per year (forever)

(b) CC = -10,000 – 30,000(P/F,12%,3) – (8000/0.12)(P/F,12%,3)
= -10,000 – 30,000(0.7118) – 66,667(0.7118)
= $-78,808

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