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MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
Sally runs a McDonald’s franchise.
She is selling 20 Big Macs per day at a price of $3.25.
If she lowers the price to $3.20, she will sell 21 Big Macs.
What is the marginal revenue of the 21 st
Big Mac? If selling the extra Big Mac adds $1.0 to Sally’s costs, what will be the effect on her profit from selling 21 instead of 20?
Show all your work.
(2pts)
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