A paper company invests $4m to clear a tract of land and plant some young pine trees. The trees will mature in 10 years, at which time the forest will have a market value of $8m. What is the expected...

A paper company invests $4m to clear a tract of land and plant some young pine trees. The
trees will mature in 10 years, at which time the forest will have a market value of $8m. What is
the expected rate of return for the paper company's investment?