Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA AFM Exams › Question regarding Black Scholes
- This topic has 3 replies, 2 voices, and was last updated 4 years ago by John Moffat.
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- October 27, 2020 at 5:07 pm #593282
Hello. It’s quite difficult for me to identify Pa and Pe values in questions.
In the MMC question from BPP Revision Kit, I used the present value of cash flows from the project as Pa. But in another question (Furlion) I knew the present value of cash flows from the project, but I had to undo the discounting. I had to use the cash flow value (not its present value) a Pa. I don’t understand why this is.
MCC : Pa = 38.75
Furlion : Pa = 10.68Any guidelines on how to identify these values from questions? Also, why was Pa different for these two questions (one discounted, other one not discounted)
October 28, 2020 at 8:06 am #593324In Furlion, the question says that the expected NPV of the expansion is $0.
Since the expansion will involve expenditure of $15M in 3 years time, then the PV of the cash receipts from the expansion must also equal $15M in 3 years time (so that the NPV is zero).
Pa is the PV ‘now’ and so the $15M needs to be discounted for 3 years, which gives $10.68M
October 28, 2020 at 8:19 am #593329Alright. Another question popped into my head.
Shouldn’t Pe, which is 15 also be discounted since its happening after 3 years?
October 28, 2020 at 8:34 am #593337No.
As I explain in my free lectures, the last term in the Black Scholes equation (the one with Pe and ‘e’ in it) is effectively discounting Pe on a continuous basis (instead of year by year as we usually do elsewhere). So we don’t need to discount it again 🙂
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