$____________5. Your brother knows you are taking CMP325 and are fast becoming a financial genius. He plans to retire when he is 55 years old; today is his 18th birthday. If he plans to accumulate $1,000,000 for retirement, how much must he deposit each year in order to reach his goal if his investment will pay 8% interest per year compounded annually?
The question belongs to Annuity Due.
The formula for Annuity Due:
Future Value of Annuity = Annuity *[ { (1+ rate ) n - 1
} / rate ] * ( 1 + r )
Given:
Rate: 8%
n= 37 years ( 55 years - 18 years)
Future Value of Annuity = $ 1,000,000
Now,
1,000,000 = Annuity * [ { ( 1+0.08 ) 37 - 1 } / 0.08 ] *
( 1+ 0.08 )
1,000,000 = Annuity * [ { ( 1.08 ) 37 - 1 } / 0.08 ] *
1.08
1,000,000 = Annuity * [ { 17.24 - 1 } /1.08 ] * 1.08
1,000,000 = Annuity * [ 16.24 / 1.08 ] * 1.08
1,000,000 = Annuity * [ 203 ] * 1.08
1,000,000 = Annuity * 219.24
Annuity = 1,000,000 / 219.24
Annutiy = $ 4561.21
So, he must deposit $ 4561.21 each year in order to reach his
goal.
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