document.write( "Question 150247: Luisa is 5 years younger than her sister Sigrid,8 years from now she will be four-fifths as old as her sister will be then. How old is each now?
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Algebra.Com's Answer #110242 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Luisa is 5 years younger than her sister Sigrid,8 years from now she will be four-fifths as old as her sister will be then. How old is each now? \n" ); document.write( "------------------------ \n" ); document.write( "Let Luisa be x yrs old now \n" ); document.write( "The Sigrid is x+5 yrs old now \n" ); document.write( "----------------------------- \n" ); document.write( "Luisa is x+8 yrs old eight years from now. \n" ); document.write( "Sigrid is (x+5)+8 eight years from now \n" ); document.write( "EQUATION: \n" ); document.write( "x+8 = (4/5)((x+5)+8) \n" ); document.write( "5x + 40 = 4x + 52 \n" ); document.write( "x = 12 (Luisa's age now) \n" ); document.write( "x+5 = 17 (Sigrid's age now) \n" ); document.write( "============================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |