document.write( "Question 847024: The son is 21 years younger than the mother. In six years she will be five times as old as him. What age will the son be?
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Algebra.Com's Answer #510093 by Alan3354(69443)\"\" \"About 
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The son is 21 years younger than the mother. In six years she will be five times as old as him. What age will the son be?
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\n" ); document.write( "s = m - 21 ******* Always 21 yrs difference
\n" ); document.write( "5(s + 6) = m + 6 ***** 6 yrs from now
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\n" ); document.write( "5s+30 = m+6
\n" ); document.write( "Sub for s
\n" ); document.write( "5(m-21) + 30 = m+6
\n" ); document.write( "5m - 75 = m + 6
\n" ); document.write( "4m = 81
\n" ); document.write( "m = 20.25
\n" ); document.write( "Makes the son's present age negative.
\n" ); document.write( "Not a good problem.
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