document.write( "Question 236833: A man is 20 yrs older than his son.In 10 yrs, he will be twice as old as his will be then be.How old is each?
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Algebra.Com's Answer #174210 by checkley77(12844)\"\" \"About 
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Son=x
\n" ); document.write( "Dad=x+20
\n" ); document.write( "(x+20)+10=2(x+10)
\n" ); document.write( "x+30=2x=20
\n" ); document.write( "x-2x=20-30
\n" ); document.write( "-x=-10
\n" ); document.write( "x=10 age of the son now.
\n" ); document.write( "10+20=30 age of the dad now.
\n" ); document.write( "Proof:
\n" ); document.write( "(10+20)+10=2(10+10)
\n" ); document.write( "30+10=2*20
\n" ); document.write( "40=40
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