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Revision as of 21:28, 3 August 2006
Problem
Joe and JoAnn each bought 12 ounces of coffee in a 16 ounce cup. Joe drank 2 ounces of his coffee and then added 2 ounces of cream. JoAnn added 2 ounces of cream, stirred the coffee well, and then drank 2 ounces. What is the resulting ratio of the ammount of cream in Joe's coffee to that in JoAnn's coffee?
Solution
After drinking and adding cream, Joe's cup has ounces of cream.
After adding cream to her cup, JoAnn's cup had ounces of liquid. By drinking
ounces out of the
ounces of liquid, she drank
th of the cream. So there is
ounces of cream left.
So the desired ratio is: