document.write( "Question 710106: John is 3 times as old as martha, Seven years ago the sum of their ages was 54. How old are they now \n" ); document.write( "
Algebra.Com's Answer #436868 by sachi(548)![]() ![]() You can put this solution on YOUR website! John is 3 times as old as martha, \n" ); document.write( "let martha is x yrs \n" ); document.write( "john is 3x yrs \n" ); document.write( "Seven years ago \n" ); document.write( "martha is x-7 yrs \n" ); document.write( "john is 3x-7 yrs \n" ); document.write( "the sum of their ages was 54. \n" ); document.write( "so x-7+3x-7=54 \n" ); document.write( "or 4x=54+14=68 \n" ); document.write( "or x=17 yrs \n" ); document.write( "and john is 51 yrs \n" ); document.write( " \n" ); document.write( " |