If upon graduating on your 25 th birthday, you were able to save
$3000 per year for eight full
years (EOY 25-32) until you were married, how much is the savings
worth until your retirement
at the end of your 66 th year, assuming the annual interest rate
was 10% throughout, and you did
not withdraw any of the principal or interest until then? Draw a
cash flow diagram, including
the value of the annuity at both years 32 and 66.
Age | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 66 | ||
Amount | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | |||||
Future value of an annuity = C[((1+r)^t-1)/r] | |||||||||||||
where C is the annuity payment that is 3000 | |||||||||||||
r is the interest rate that is .10 | |||||||||||||
t is the year | |||||||||||||
Future value of annuity in 8 years = 3000*[(((1.10)^8)-1)/.10] | |||||||||||||
Future value of annuity in 8 years = 34307.66 | |||||||||||||
The value of the annuity at age 32 = $34307.66 | |||||||||||||
Future Value = Present Value*((1+r)^t) | |||||||||||||
where r is the interest rate that is .10 and t is the time period that is (66 - 32) 34 years | |||||||||||||
Present value = 34307.66 | |||||||||||||
Future Value = 34307.66*((1.10)^34) | |||||||||||||
The value of the annuity at age 66 = $876480.77 |
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