document.write( "Question 224299: My Mum was 27 when I was born.
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document.write( "8 years ago she was twice as old as I shall be in 5 years time.
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document.write( "How old am I? \n" );
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Algebra.Com's Answer #167567 by rapaljer(4671)![]() ![]() You can put this solution on YOUR website! Let x = my age now \n" ); document.write( "x+27 = Mum's age now \n" ); document.write( "x+5= my age in 5 years\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Mum's age now - 8 years = Two times my age in 5 years\r \n" ); document.write( "\n" ); document.write( "x+27 - 8 = 2(x+5) \n" ); document.write( "x+19=2x+10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract x from each side: \n" ); document.write( "x+19-x=2x-x+10 \n" ); document.write( "19=x+10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract 10 from each side: \n" ); document.write( "9=x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "My age is 9 years NOW, and Mum's age is 9+27=36 years NOW.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Check: \r \n" ); document.write( "\n" ); document.write( "Eight years ago Mum was 28. My age in 5 years will be 14. Indeed, her age eight years ago was twice my age in 5 years.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "R^2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Dr. Robert J. Rapalje, Retired \n" ); document.write( "Seminole State College of Florida \n" ); document.write( "Altamonte Springs Campus \n" ); document.write( " |