document.write( "Question 290970: The sum of the ages of Joe and Jim is 90. Six years from now, Joe will be twice Jim's age. Find Joe's present age. \n" ); document.write( "
Algebra.Com's Answer #210528 by Deina(147)\"\" \"About 
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\n" ); document.write( "Let:
\n" ); document.write( "J = Joe
\n" ); document.write( "M = Jim \r
\n" ); document.write( "\n" ); document.write( "J + M = 90
\n" ); document.write( "M = 90 - J
\n" ); document.write( "\"+J+%2B+6+=+cross%282%28M+%2B+6%29%29+=+2M+%2B+12++\" Substitute (90 - J) for M
\n" ); document.write( "\"+J+=+cross%282%2890+-+J%29+%2B+6%29+=+180+-+2J+%2B+6+\"
\n" ); document.write( "\"+J+%2B+2J+=+186+\"

\n" ); document.write( "\"+3J%2F3+=+186%2F3+\"
\n" ); document.write( "J = 62
\n" ); document.write( "90 - 62 = 38

\n" ); document.write( "Joe = 62, Jim = 38 \r
\n" ); document.write( "\n" ); document.write( "and bob's your uncle!
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