document.write( "Question 979494: A father is twice as old as his son. He was 6 times his son’s age 20 years ago. What is the father’s present age?
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Algebra.Com's Answer #600788 by Alan3354(69443)\"\" \"About 
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A father is twice as old as his son. He was 6 times his son’s age 20 years ago. What is the father’s present age?
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\n" ); document.write( "F = 2S
\n" ); document.write( "F-20 = 6*(S-20)
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