document.write( "Question 743399: Twenty years ago the age of the father was four times the age of son . After four years from now the age of the father will be double that of son .Give algebraic and graphical representation of the situation and hence find their ages.
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Algebra.Com's Answer #452859 by mananth(16946)\"\" \"About 
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Twenty years ago the age of the father was four times the age of son . After four years from now the age of the father will be double that of son .Give algebraic and graphical representation of the situation and hence find their ages. \r
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\n" ); document.write( "\n" ); document.write( "let sons age now be x\r
\n" ); document.write( "\n" ); document.write( "20 years ago son's age = x-20
\n" ); document.write( "fathers age = 4(x-20)\r
\n" ); document.write( "\n" ); document.write( "4 years hence\r
\n" ); document.write( "\n" ); document.write( "sons age = x+4
\n" ); document.write( "fathers age = 4(x-20)+24
\n" ); document.write( "4(x-20)+24= 2(x+4)\r
\n" ); document.write( "\n" ); document.write( "4x-80+24=2x+8\r
\n" ); document.write( "\n" ); document.write( "4x-56=2x+8
\n" ); document.write( "4x-2x=56+8
\n" ); document.write( "2x=64
\n" ); document.write( "x=32 son's age now
\n" ); document.write( "20 years ago father's age = 4(x-20)=>4(32-20)=>48\r
\n" ); document.write( "\n" ); document.write( "So now father is 68 years\r
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