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marissa [1.9K]
3 years ago
11

Your parents will retire in 20 years. They currently have $300,000 saved, and they think they will need $1,450,000 at retirement

. What annual interest rate must they earn to reach their goal, assuming they don't save any additional funds?
Mathematics
1 answer:
Tanya [424]3 years ago
6 0
N=20 periods (years)
present value, P = 300,000
future value, F= 1450000
i=annual interest rate

F=P(1+i)^n
1450000=300000(1+i)^{20}
(1+i)^{20}=1450000/300000
(1+i)^{20}=29/6
(1+i)=(29/6)^{1/20}
i=(29/6)^{1/20}-1
i=(29/6)^{1/20}-1
=1.081963-1
=0.081963
=8.1963%

Answer: they need to earn 8.1963% or more to achieve their goal.
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