In: Finance
What interest rate is one earning over ten years
if the investment initially is 100$ and you receive 20$ back at the
end of ten years?
A.6
B.8
C.7.2
D.9.5
Note $20 is taken as $200, as it is Logical.
Future Value = Present Value * (1+r)^n
n = 10 years
200 = 100 * (1+r)^10
(1+r)^10 = 200 / 100
(1+r)^10 = 2
1+r = 2^(1/10)
r = 1.07177346254 -1
r = 7.20%
Option C is correct.