document.write( "Question 149964: Cecile is now four times as old as Daisy.Five years ago, the sum of their ages was 45.How old is each now?\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #110074 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Cecile's age now = $\"c\"$
\n" ); document.write( "Daisy's age now = $\"d\"$
\n" ); document.write( "(1) $\"c+=+4d\"$
\n" ); document.write( "Five years ago, Cecile's age was $\"c+-+5\"$
\n" ); document.write( "Five years ago, Daisy's age was $\"d+-+5\"$
\n" ); document.write( "(2) $\"%28d+-+5%29+%2B+%28c+-+5%29+=+45\"$
\n" ); document.write( "sububstitute (1) into (2)
\n" ); document.write( " $\"%28d+-+5%29+%2B+%284d+-+5%29+=+45\"$
\n" ); document.write( " $\"5d+-+10+=+45\"$
\n" ); document.write( " $\"5d+=+55\"$
\n" ); document.write( " $\"d+=+11\"$
\n" ); document.write( " $\"c+=+4d\"$
\n" ); document.write( " $\"c+=+44\"$
\n" ); document.write( "Daisy's age is 11 now and Cecile's age is 44 now
\n" ); document.write( "check:
\n" ); document.write( " $\"%28d+-+5%29+%2B+%28c+-+5%29+=+45\"$
\n" ); document.write( " $\"%2811+-+5%29+%2B+%2844+-+5%29+=+45\"$
\n" ); document.write( " $\"6+%2B+39+=+45\"$
\n" ); document.write( " $\"45+=+45\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );