document.write( "Question 388994: Jeff is Three times as old as his son. In nine years, Jeff will be twice as old as his son. How old is each now? \n" ); document.write( "
Algebra.Com's Answer #275450 by stanbon(75887)\"\" \"About 
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Jeff is Three times as old as his son.
\n" ); document.write( "In nine years, Jeff will be twice as old as his son.
\n" ); document.write( "How old is each now?
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\n" ); document.write( "Equations:
\n" ); document.write( "j = 3s
\n" ); document.write( "(j+9) = 2(s+9)
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\n" ); document.write( "Substitute for \"j\":
\n" ); document.write( "(3s+9) = 2s+18
\n" ); document.write( "s = 9 (Son's age now}
\n" ); document.write( "---
\n" ); document.write( "j = 3s = 27 (Jeff's age now)
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\n" ); document.write( "Cheers,
\n" ); document.write( "stan H.
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