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Monday, June 05, 2006

Jon's

--posted by JRJ on 6/05/2006

One of the most famous puzzles in the math world is "How Old is Ann?" Here's another variation. Ann is now exactly two-fifths of her older sister's age, and two years from now she will be one-half of her older sister's age. Conversely, two years ago, Anne was one-fourth the age of her older sister's age at that time. How old is Ann now? (She's a fairly young child, by the way.)

2 Comments:

Blogger MN Campaign Report said...

Ann is 4 and her sister is 10

June 05, 2006  
Blogger JRJ said...

CORRECT (80%)

June 12, 2006  

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