An investment offers $10,000 at the end of each year for ten years. (a) If you can earn 5 percent annually, what is this investment worth today? (b) If you do not spend the annual payment but invest it at 5 percent, how much will you have after the ten years have lapsed?
Given,
Annual payment (A) = $10000
No. of years (n) = 10 years
Solution :-
(a)
Interest rate (r) = 5% or 0.05
Present value = A/r x [1 - (1 + r)-n]
= $10000/0.05 x [1 - (1 + 0.05)-10]
= $200000 x [1 - (1.05)-10]
= $200000 x [1 - 0.61391325354]
= $200000 x 0.38608674646 = $77217.35
This investment is worth $77217.35 today.
(b)
Interest rate (r) = 5% or 0.05
No. of years (n) = 10 years
Future value = A/r x [(1 + r)n - 1]
= $10000/0.05 x [(1 + 0.05)10 - 1]
= $200000 x [(1.05)10 - 1]
= $200000 x [1.62889462675 - 1]
= $200000 x 0.62889462675 = $125778.93
You will have $125778.93 after ten years.
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