document.write( "Question 770646: a father is 30years older than his son. 3years ago he was 3times as old as his son. How old is the father now? \n" ); document.write( "
Algebra.Com's Answer #469699 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Father = 30 + Son \n" ); document.write( "F = 30 + S \n" ); document.write( "3years ago he was 3times as old as his son. \n" ); document.write( "F - 3 = 3(S - 3) \n" ); document.write( "Replace F with 30 + S \n" ); document.write( "30 + S - 3 = 3(S - 3) \n" ); document.write( "27 + S = 3S - 9 \n" ); document.write( "2S = 36 \n" ); document.write( "S = 18 \n" ); document.write( "Father is 48 years old \n" ); document.write( "Son is 18 years old. \n" ); document.write( "Hope this helps \n" ); document.write( ":-) \n" ); document.write( " |