I have hit the pause button here. All of what the Snow Leopard has written above is correct. And yes I did assume our buyer B, bought the 'bond' (if it was a bond) off an earlier buyer A. But as the Snow Leopard says, the exact history of the story of this 'bond' is irrelevant, provided we know the starting conditions, the ending conditions and the interest payments for the bond (if I am allowed to call it that) for the duration of the investment in question.
I would argue it doesn't show the method used, as the author writes in rather ambiguous terms.
"It will be found that the constant annual rate R is 16.2308% per annum"
I went to my front door mat today, lifted it up, and didn't find anything. So if that isn't proof the IRD is not telling the full story, I don't know what is!
SNOOPY
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