A. Find the future value of the following annuity: $375 per month, for fifteen years, at 8 percent simple rate.
In this case, compounded is happening monthly, so rate will be divided by 12 (Number of months in a year) and year is multiplied by 12.
r = 9%/12 = 0.75%
n = 10 *12 = 120
We should now calculate PVIF (Present value interest factor)
PVIF = 1 - (1+r)^-n / r
= 1 - (1+ 0.0075)^-120 / 0.0075
= 1 - (1.0075)^-120 / 0.0075
= 1 - 0.4079 / 0.0075
= 0.5921 / 0.0075
= 78.95 approx.
Present value = 375 * 78.95 = $ 29,606.25
Similarly, we have to find PVIF for the second part:
n = 15 * 12= 180
r = 8%/12 = 0.67%
PVIF = 1 - (1+r)^-n / r
= 1 - (1+ 0.0067)^-180 / 0.0067
= 1 - (1.0067)^-180 / 0.0067
= 1 - 0.3006 / 0.0067
= 0.6994 / 0.0067
= 104.39 approx.
Present value = 375 * 104.39 = $ 39,146.25
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