economic
posted by dolly .
why it is incorrect to advertise up to the point that the last dollar of advertising generates another dollar of sales? What is the correct rule for the marginal advertising dollar ??

You will find information here:
http://www.google.com/search?q=rule+for+marginal+advertising+dollar&ie=utf8&oe=utf8&aq=t&rls=org.mozilla:enUS:official&client=firefoxa
Sra 
That last dollar sale of some item; didn't it cost anything to create the item? Note the difference between sales and profit.
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