document.write( "Question 763091: 5 years ago Lakshmi's mother was five timers her age.If her mother is now thrice as old as her, find their present ages? \n" ); document.write( "
Algebra.Com's Answer #464585 by ramkikk66(644)![]() ![]() ![]() You can put this solution on YOUR website! Let Lakshmi's age be x years \n" ); document.write( "Let her mother's age be y years.\r \n" ); document.write( "\n" ); document.write( "Given: Mother is currently 3 times as old as Lakshmi.\r \n" ); document.write( "\n" ); document.write( "So, \n" ); document.write( "\n" ); document.write( "Also given: 5 years ago, mother was 5 times as old as Lakshmi\r \n" ); document.write( "\n" ); document.write( "So, \n" ); document.write( " or 5*x - 25 = y-5 \n" ); document.write( " or \n" ); document.write( "\n" ); document.write( "Substituting y = 3x in eqn. 2, we get:\r \n" ); document.write( "\n" ); document.write( "5*x - 3*x = 20 or 2*x = 20\r \n" ); document.write( "\n" ); document.write( "So, x = 10 years and y = 3*x = 30 years.\r \n" ); document.write( "\n" ); document.write( "So, Lakshmi's present age = 10 years \n" ); document.write( "Her mother's present age = 30 years. \r \n" ); document.write( "\n" ); document.write( ":) \n" ); document.write( " |