It's question 12 referring to problem 10 analyze the two investment alternatives under the net present value method using a 15 percent discount rate.

it's only question 12 referring to question 10 do not answer question 11.

I will need step by step explanation plus answer thanks.

10. payback method? 11. Referring to the previous problem, if the inflow in the fifth year for investment X were $30,000,000 instead of $30,000, would your answer change under the payback method? 12. Referring to problem 10 , analyze the two investment alternatives under the net present value method using a 15 percent discount rate. Would your answer change