document.write( "Question 948427: a man is 3 times as old as his son. In 12 years time he will be twice as old as his son. How old is both of them? \n" ); document.write( "
Algebra.Com's Answer #578902 by macston(5194)![]() ![]() You can put this solution on YOUR website! F=Father's age=3S; S=Son's age \n" ); document.write( "F=3S \n" ); document.write( "F+12=2(S+12) Substitute for F \n" ); document.write( "3S+12=2(S+12) \n" ); document.write( "3S+12=2S+24 Subtract 2S from each side. \n" ); document.write( "S+12=24 Subtract 12 from each side. \n" ); document.write( "S=12 ANSWER 1:The son is 12 years old. \n" ); document.write( "F=3S=3(12)=36 years old ANSWER 2: The father is 36 years old. \n" ); document.write( "CHECK: \n" ); document.write( "In 12 years: \n" ); document.write( "F+12 years=2(S+12 years) \n" ); document.write( "36+12=2(12+12) \n" ); document.write( "48 years =48 years \n" ); document.write( " |