Outline Mathematics Word Problems Billy is twice as old as Sally Here's a problem to tackle:   Billy is twice as old as Sally was when Billy was as old as Sally is now. And the sum of their ages is 28. How old are they now? Solution Copyright © 1996-2008 Alexander Bogomolny                             Solution   Billy is twice as old as Sally was when Billy was as old as Sally is now. And the sum of their ages is 28. How old are they now? (In the applet below, click on the underlined omitted expressions. See what happens.) // formulations This applet requires Sun's Java VM 2 which your browser may perceive as a popup. Which it is not. If you want to see the applet work, visit Sun's website at http://www.java.com/en/download/index.jsp, download and install Java VM and enjoy the applet. Do not forget to check your solution. References J. A. H. Hunter, Mathematical Brain-Teasers, Dover Publications, 1976 Copyright © 1996-2008 Alexander Bogomolny

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