document.write( "Question 927721: A is 10 yrs older than B. B is 10 yrs younger than C. D is 10 yrs older than A . E is ten years younger than D .\r
\n" ); document.write( "\n" ); document.write( "Who is the youngest ?
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Algebra.Com's Answer #563198 by KMST(5328)\"\" \"About 
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ALGEBRA-STYLE:
\n" ); document.write( "A (who is \"a\" years old) is 10 yrs older than B (who is \"b\" years old), so \"a=b%2B10\"
\n" ); document.write( "B is 10 yrs younger than C (who is \"c\" years old), so
\n" ); document.write( "\"b=c-10\"<--->\"c=b%2B10\"
\n" ); document.write( "D (who is \"d\" years old) is 10 yrs older than A, so
\n" ); document.write( "\"d=a%2B10\"--->\"d=%28b%2B10%29%2B10\"--->\"d=b%2B20\"
\n" ); document.write( "E (who is \"e\" years old) is ten years younger than D, so
\n" ); document.write( "\"e=d-10\"--->\"d=%28b%2B20%29-10\"--->\"d=b%2B10\" .
\n" ); document.write( "So, \"highlight%28B%29\" is the youngest,
\n" ); document.write( "A, C, and E are all the same age, and 10 years older than B,
\n" ); document.write( "and D is 20 years older than B, and the oldest of them all.
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\n" ); document.write( "You can also do it without algebra, plotting ages on a number line.
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