document.write( "Question 919091: the fathers age is 5 times than son and after 5 years the fathers age is 4 times bigger than son then what will be the age of father and son.
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Algebra.Com's Answer #557480 by ewatrrr(24785)\"\" \"About 
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x the son's age now ...referred to
\n" ); document.write( "5x + 5 = 4(x+5)
\n" ); document.write( "5x + 5 = 4x + 20
\n" ); document.write( "x = 15, the son's age now. Father is 75
\n" ); document.write( "five years from now...
\n" ); document.write( "20 and 80
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\n" ); document.write( "80 = 4(20)
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