document.write( "Question 49146: How do you solve the following word problem?\r
\n" ); document.write( "\n" ); 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
\n" ); document.write( "\n" ); 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)\"\" \"About 
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.
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