document.write( "Question 601630: Harry is older then 10. His age this year is a square number, in two years time his age will be a multiple of 11. How old is Harry? \n" ); document.write( "

Algebra.Com's Answer #379929 by godsgirls(5) $\"\"$ $\"About$

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Well, we know he is over ten, and his age is a square number. start listing square numbers over ten.\r
\n" ); document.write( "\n" ); document.write( "16 = 4 squared
\n" ); document.write( "25 = 5 squared
\n" ); document.write( "36 = 6 squared
\n" ); document.write( "49 = 7 squared
\n" ); document.write( "64 = 8 squared
\n" ); document.write( "81 = 9 squared
\n" ); document.write( "100= 10 square\r
\n" ); document.write( "\n" ); document.write( "I seriously doubt Harry is older than 100, so we'll stop here.
\n" ); document.write( "Now, which of these numbers, if you add two, can be divided by eleven? Well, start adding two to all your squared ages. \r
\n" ); document.write( "\n" ); document.write( "Is it 18? 27? 38? 51? 66? 83? or 102?
\n" ); document.write( "it should be easy to see that 66 is the only number divisible by 11. Before we added two, it was 64. Harry is 64 years old. \n" ); document.write( "

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