document.write( "Question 29343: In two years my Cousin Marty will be twice as old as he was five years ago. How old is Marty? \n" ); document.write( "
Algebra.Com's Answer #16158 by AnlytcPhil(1806)![]() ![]() You can put this solution on YOUR website! In two years my Cousin Marty will be twice as old as he was\r\n" ); document.write( "five years ago. How old is Marty?\r\n" ); document.write( "\r\n" ); document.write( "In 2008 Marty will be twice as old as he was in 2001.\r\n" ); document.write( "How old is he in 2006? \r\n" ); document.write( "\r\n" ); document.write( "In 2006 Marty is M years old.\r\n" ); document.write( "In 2008 Marty will be M+2 years old\r\n" ); document.write( "In 2001 Marty was M-5 years old\r\n" ); document.write( "\r\n" ); document.write( "Therefore M+2 must be twice M-5\r\n" ); document.write( "\r\n" ); document.write( "M+2 = 2(M-5)\r\n" ); document.write( "\r\n" ); document.write( "Solve that and you'll get that Marty is 12 in 2006. \r\n" ); document.write( "Checking: In 2001 Marty was 7 and in 2008 he'll be 14, \r\n" ); document.write( "and that's twice 7.\r\n" ); document.write( "\r\n" ); document.write( "Edwin\r\n" ); document.write( "AnlytcPhil@aol.com\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |