document.write( "Question 205935: How can I solve this? pls. help!\r
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document.write( "Marie is twelve years older than her brother Ben. Four years from now, Ben will be two-thirds as old as Marie. How old is Ben now? \n" );
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Algebra.Com's Answer #155593 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! Let Ben's age be=x & Marie's age be=(x+12) \n" ); document.write( "In 4 years Ben's age will be (x+4 ) \n" ); document.write( "In 4 years Marie's age will be (x+16) \n" ); document.write( "So: (x+4)=2/3(x+16) \n" ); document.write( "(x+4)=(2x+32)/3 \n" ); document.write( "3(x+4)=2x+32 \n" ); document.write( "3x+12=2x+32 \n" ); document.write( "3x-2x=32-12 \n" ); document.write( "x=20 years old is Ben now. \n" ); document.write( "20+12=32 years old is Marie now. \n" ); document.write( "Proof: \n" ); document.write( "20+4=2/3(20+16) \n" ); document.write( "24=2/3*36 \n" ); document.write( "24=72/3 \n" ); document.write( "24=24 \n" ); document.write( " \n" ); document.write( " |