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Old 05-23-2013, 07:56 PM   #3
Lord Morpheus
 
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Join Date: Nov 2005
Location: Brazil
Default Re: Power Stone Price

Quote:
Originally Posted by Anthony View Post
You're missing "Powerstone prices account for this risk; hence, the true materials cost is divided by 53/54 to the power of P."
The actual cost of a 50 point stone is:
materials: (40 * 50 + 10 * 50 * 50) * (54/53)^50 = 68,745
labor: 20 * 50 = 1,000.
Total 69,745, which inexplicably got rounded to 69,500.

Note that the box on Magic 20 assumes that quirks don't influence the value of powerstones, which is unrealistic, and ignores some more complex math for the actual number of castings required to produce a powerstone.
Thanks I was hopping someone will get this in the discussion. I really don't understand this part of the math. (54/53)^50
What is the calculation here. Can you make this step by step?
Thanks again (my math abilities are a disgrace)
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