You are considering an investment in a Third World bank account that pays a nominal annual rate of 18%,compounded monthly.If you invest $5,000 at the beginning of each month,how many months would it take for your account to grow to $250,000? Round fractional months up.
A)23
B)27
C)32
D)38
E)44

Question

Quizplus · Accepted Answer

We can use the formula for the future value of an annuity to solve this problem:

FV = PMT * [((1 + r/n)^nt - 1) / (r/n)]

where FV is the future value, PMT is the payment, r is the nominal annual rate, n is the number of times compounded per year, and t is the number of years.

In this case, PMT = $5,000, r = 18%, n = 12 (compounded monthly), and we want to solve for t when FV = $250,000.

$250,000 = $5,000 * [((1 + 0.18/12)^(12t) - 1) / (0.18/12)]

Simplifying and solving for t, we get:

t = 37.95

Rounding up to the nearest whole number, we get t = 38 months, which is answer choice D.

You Are Considering an Investment in a Third World Bank