document.write( "Question 979979: Jack is 4 times as old as Lacy. 3 years ago the sum of their ages was 24. How old are they now? \n" ); document.write( "

Algebra.Com's Answer #601199 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1) $\"+J+=+4L+\"$
\n" ); document.write( "(2) $\"+j+-+3+%2B+L+-+3+=+24+\"$
\n" ); document.write( "-------------------------
\n" ); document.write( "Substitute (1) into (2)
\n" ); document.write( "(2) $\"+4L+-+3+%2B+L+-+3+=+24+\"$
\n" ); document.write( "(2) $\"+5L+=+24+%2B+6+\"$
\n" ); document.write( "(2) $\"+5L+=+30+\"$
\n" ); document.write( "(2) $\"+L+=+6+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+J+=+4L+\"$
\n" ); document.write( "(1) $\"+J+=+4%2A6+\"$
\n" ); document.write( "(1) $\"+J+=+24+\"$
\n" ); document.write( "--------------------
\n" ); document.write( "Jack is 24
\n" ); document.write( "Lacy is 6
\n" ); document.write( "------------------
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+j+-+3+%2B+L+-+3+=+24+\"$
\n" ); document.write( "(2) $\"+24+-+3+%2B+6+-+3+=+24+\"$
\n" ); document.write( "(2) $\"+30+-+6+=+24+\"$
\n" ); document.write( "(2) $\"+24+=+24+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

\n" );