document.write( "Question 1088111: Please help me solve this word problem:6 years ago, a father was seven times as old as his son. Again, 4 years later, the father will be only thrice as old as his son. How old is the son now? \n" ); document.write( "
Algebra.Com's Answer #702362 by josgarithmetic(39620)\"\" \"About 
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f, father
\n" ); document.write( "s, son\r
\n" ); document.write( "\n" ); document.write( "\"Again, 4 years later,...will be...\"-----four years later than now:
\n" ); document.write( "\"system%28f-6=7%28s-6%29%2Cf%2B4=2%28s%2B4%29%29\"\r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"f=7s-42%2B6\"
\n" ); document.write( "\"f=7s-36\"
\n" ); document.write( "-
\n" ); document.write( "\"7s-36%2B4=2s%2B8\"
\n" ); document.write( "\"5s-36%2B4=8\"
\n" ); document.write( "\"4s=8-4%2B36\"
\n" ); document.write( "\"4s=40\"
\n" ); document.write( "\"highlight%28highlight%28s=10%29%29\"
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