document.write( "Question 49146: How do you solve the following word problem?\r
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document.write( "Shirley is currently twice as old as HArry. Four years ago, Shirley was 3 times as old as Harry. How old were Shirley and Harry 4 years ago? \r
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document.write( "I can't remember how to solve the equation when there are two unknowns.
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Algebra.Com's Answer #32580 by Paul(988)![]() ![]() ![]() You can put this solution on YOUR website! Shirley's age = 2x \n" ); document.write( "Hary's age = x \n" ); document.write( "4 years ago Shirley's age was = 2x-4 \n" ); document.write( "Hary's age was = x-4 \n" ); document.write( "EQUATION: \n" ); document.write( "3(x-4)=2x-4 \n" ); document.write( "3x-12=2x-4 \n" ); document.write( "x=8 \n" ); document.write( "2(8)=16 \n" ); document.write( "8-4=4 \n" ); document.write( "16-4=12 \n" ); document.write( "Hence, SHirley was 12 years old, and Hary was 4 years old four years ago. \n" ); document.write( "Paul. \n" ); document.write( " |