document.write( "Question 1080722: katie is twice the age of sophie this year. Four years ago she was three times Sophie's age, what is Sophie's age now \n" ); document.write( "

Algebra.Com's Answer #694840 by Fombitz(32388) $\"\"$ $\"About$

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1. $\"K=2S\"$
\n" ); document.write( "Four years ago,
\n" ); document.write( " $\"K-4=3%28S-4%29\"$
\n" ); document.write( " $\"K-4=3S-12\"$
\n" ); document.write( " $\"K=3S-8\"$
\n" ); document.write( "Substituting from 1,
\n" ); document.write( " $\"2S=3S-8\"$
\n" ); document.write( " $\"-S=-8\"$
\n" ); document.write( " $\"S=8\"$
\n" ); document.write( " \n" ); document.write( "

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