document.write( "Question 268349: Kathy is 6 years younger than Bill. Twelve years ago, Bill twice as old as Kathy was then. How old are they now? \n" ); document.write( "

Algebra.Com's Answer #196674 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"k\"$ = Kathy's age now
\n" ); document.write( " $\"b\"$ = Bill's age now
\n" ); document.write( "(1) $\"k+=+b+-+6\"$
\n" ); document.write( "(2) $\"b+-+12+=+2%2A%28k+-+12%29\"$
\n" ); document.write( "(2) $\"b+-+12+=+2k+-+24\"$
\n" ); document.write( "(2) $\"2k+-+b+=+12\"$
\n" ); document.write( "From (1)
\n" ); document.write( "(1) $\"-k+%2B+b+=+6\"$
\n" ); document.write( "Add (1) and (2)
\n" ); document.write( " $\"k+=+18\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"k+=+b+-+6\"$
\n" ); document.write( " $\"18+=+b+-+6\"$
\n" ); document.write( " $\"b+=+24\"$
\n" ); document.write( "Kathy is 18 and Bill is 24
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"b+-+12+=+2%2A%28k+-+12%29\"$
\n" ); document.write( " $\"24+-+12+=+2%2A%2818+-+12%29\"$
\n" ); document.write( " $\"12+=+12\"$
\n" ); document.write( "OK \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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