9)As part of you financial planning and to supplement your retirement, you decided to save $3,000 at the end of each year for 30 years, how much money you will have in your account if you can earn 10% ?
10) Referring to question number 9, Assume that you deposited the money at the beginning of the year, how much money you would find in your account in the 30 years?
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9)
The stream of cash flows represents an annuity
We need to calculate the future value of annuity
Future value of annuity
= P x [ ( 1 + r ) ^ n – 1] / r
Where,
P = Annual payments at the end of the year = $3,000
r = Rate of interest = 10% or 0.10
n = Number of years = 30
So, Future value of annuity
= $3,000 x [ 1.10 ^ 30 – 1 ] / 0.10
= $3,000 x [17.449402 – 1 ] / 0.10
= $3,000 x 164.494022
= $ 493,482.07
10)
The stream of cash flows represents annuity due
Future value of annuity due
= ( 1 + r ) x P x [ ( 1 + r ) ^ n – 1] / r
= 1.10 x $3,000 x [ 1.10 ^ 30 – 1 ] / 0.10
= 1.10 x $3,000 x [17.449402 – 1 ] / 0.10
= 1.10 x $3,000 x 164.494022
= 1.10 x $ 493,482.07
= $542,830.27
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