Which project is more profitable?

Consider two projects: Project A currently costs $$13$ million, which is to be paid this year. The returns are $$8$ million in one year and $$6$ million in two years. Project B currently costs $$16$ million, again to be paid this year. The returns are $$12$ million in one year and $$11$ million in two years.

At an interest rate of $6\%,$ the net present value of Project $A$ is roughly $-$ while the net present value of Project B is roughly

Suppose investing in one project eliminates the opportunity to invest in the other. If the interest rate is $6\%,$ Project $q,$ is preferable.

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