### Net present value

You buy (t=0) an apartment building for $500,000. You expect to earn $40,000 a year in rent for the following 3 years (t=1-3). Then, at the end of year 3, you expect to sell the building for $550,000. The required rate of return for this sort of investment is 10%. The risk-free rate is 5%. Clearly show how you would calculate