The Calvarusos have decided to invest in a college fund for their young son. They invested $20,000 in a deferred annuity that will pay their son at the beginning of every month for 4 years, while he goes to college. If the account earns 3.00% compounded monthly and the annuity payments are deferred for 12 years, what will be the size of the monthly payments?
Effective monthly rate, r = 3%/12 = 0.0025
First, let's find the future value of the invested amount in 12 years
FV12 = PV * (1 + r)^n
r = 0.0025
n = 12 * 12 = 144 months
FV12 = 20,000 * (1 + 0.0025)^144
FV12 = 20,000 * 1.4326856339
FV12 = $28,653.712678
Now, with this as the PV let's find the size of the monthly payments for 4 years
Number of monthly payments = 4 * 12 = 48
r = 0.0025
PV = 28,653.712678
The size of the monthly payments is $632.6490234754
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