document.write( "Question 1002111: A father is three times as old as his son. Six years ago he was five times as old as his son. How old are they now?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #619094 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Hi there, \n" ); document.write( "A father is three times as old as his son. \n" ); document.write( "F = 3S....(1) \n" ); document.write( "Six years ago he was five times as old as his son. \n" ); document.write( "F - 6 = 5(S - 6)......(2) \n" ); document.write( "Replace F in Equation(2) with 3s from \n" ); document.write( "Equation (1) \n" ); document.write( "3S - 6 = 5(S - 6) \n" ); document.write( "3S - 6 = 5S - 30 \n" ); document.write( "Collect like terms: \n" ); document.write( "3S - 5S = -30 + 6 \n" ); document.write( "-2S = -24 \n" ); document.write( "2S = 24 \n" ); document.write( "S = 12 \n" ); document.write( "Son is currently 12 years old. \n" ); document.write( "Father is currently 36 years old. \n" ); document.write( "Hope this helps :-) \n" ); document.write( " |