Ciao Francesco, I have seen this question and I have a similar doubt, I am kindly asking you for help to let me determine if I gave a correct answer or not :) . This is the scenario: a) I am investing 100M€ today and I am expecting a perpetual rent - 10M in Cash Flow each year; b) My 'r' is 0.1; c) I am using own capital, no debt; d) from a and b, I can see that my NPV is 0. I was asked this question: "how would you consider this investment?" My answer was: "this is an average investment, where I get an yearly return of 10% - in line with the opportunity cost". Is this wrong? Should I have said "you'd better put your money in a bank to get the same 10% return"? Thank you very much, appreciating your effort in the community