document.write( "Question 370657: elsie is twelve years old than her brother andy. four years from now andy will be two third as old as elsie. how old are they now?
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Algebra.Com's Answer #264231 by robertb(5830)\"\" \"About 
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andy = a
\n" ); document.write( "elsie= a+12. Four yrs from now, andy = a+4, elsie = a+16.
\n" ); document.write( "\"a%2B4+=+%282%2F3%29%28a%2B16%29\",
\n" ); document.write( "3a+12 = 2a + 32,
\n" ); document.write( "a = 20, the age of andy, and
\n" ); document.write( "a + 12 = 32, the age of elsie.
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