document.write( "Question 754442: Mark is an old man he is 20 years older than quadruple hi sons age if his son is 20 how old is mark? \n" ); document.write( "
Algebra.Com's Answer #459080 by stanbon(75887)\"\" \"About 
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Mark is an old man he is 20 years older than quadruple hi sons age if his son is 20 how old is mark?
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\n" ); document.write( "M = 4*20 + 20
\n" ); document.write( "Mark = 80+20
\n" ); document.write( "Mark = 100 years
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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