Answer:
-0.0246 or -2.46%
Explanation:
The duration 't' of his investment is:
[tex]t= 2015-2008=7\ years[/tex]
The future value ($10,668,500) of an initial investment ($12,700,500) at a rate 'r' for a period of 7 years is given by:
[tex]10,668,500=12,700,500*(1+r)^7\\1+r=\sqrt[7]{\frac{10,668,500}{12,700,500}}\\1+r=0.9754\\r=-0.0246=-2.46\%[/tex]
His annual rate of return was -0.0246 or -2.46%.
*A negative rate of return means that money was lost in this investment