document.write( "Question 1010741: Please help me with this word problem..
\n" ); document.write( "
\n" ); document.write( "The length of a card is three times longer than its width. The perimeter is 48 m. What is the width of the card? What is the length? \n" ); document.write( "

Algebra.Com's Answer #626204 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
The formula for perimeter is:
\n" ); document.write( " $\"+P+=+2L+%2B+2W+\"$
\n" ); document.write( "You are given:
\n" ); document.write( " $\"+L+=+3W+\"$
\n" ); document.write( "--------------
\n" ); document.write( "Substitute this for $\"+L+\"$ in
\n" ); document.write( "the formula for perimeter
\n" ); document.write( " $\"+P+=+2%2A%283W%29+%2B+2W+\"$
\n" ); document.write( " $\"+P+=+6W+%2B+2W+\"$
\n" ); document.write( " $\"+P+=+8W+\"$
\n" ); document.write( "You are also given $\"+P+=+48+\"$ m
\n" ); document.write( " $\"+48+=+8W+\"$
\n" ); document.write( "Divide both sides by $\"+8+\"$
\n" ); document.write( " $\"+W+=+6+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+L+=+3W+\"$
\n" ); document.write( " $\"+L+=+3%2A6+\"$
\n" ); document.write( " $\"+L+=+18+\"$
\n" ); document.write( "----------
\n" ); document.write( "The width is 6 m and the length is 18 m
\n" ); document.write( "check:
\n" ); document.write( " $\"+P+=+2L+%2B+2W+\"$
\n" ); document.write( " $\"+48+=+2%2A18+%2B+2%2A6+\"$
\n" ); document.write( " $\"+48+=+36+%2B+12+\"$
\n" ); document.write( " $\"+48+=+48+\"$ \n" ); document.write( "

\n" );