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Ages 27-30 Puzzle

Date: 11/06/2001 at 09:08:58
From: Jarrett Giardullo
Subject: Word problem having to do with age

Alan was 27 years old the day before yesterday. Next year he will be 
30. How is this possible?

Date: 11/06/2001 at 13:41:35
From: Doctor Greenie
Subject: Re: Word problem having to do with age

Hello, Jarrett -

It is New Year's Day, and Alan's birthday was yesterday:

   date      year    Alan's age
   Dec 30  last year     27       (day before yesterday)
   Dec 31  last year     28       (yesterday)
   Jan 1   this year     28       (today)
   Dec 31  this year     29
   Dec 31  next year     30       ("sometime" next year)

- Doctor Greenie, The Math Forum   
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