document.write( "Question 172489: The length and the width of a rectangle have ratio of 5 is to 7. The perimeter is 48cm, find the length and the width. \n" ); document.write( "

Algebra.Com's Answer #127363 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!
If Length & Width have a Ratio of 5 is to 7, it follows:
\n" ); document.write( " $\"L%2FW=5%2F7\"$ ---> $\"W=%287%2F5%29L\"$ , condition 1
\n" ); document.write( "Then, $\"P%5BR%5D=2L%2B2W\"$ , EQN 1
\n" ); document.write( "subst. condition 1:
\n" ); document.write( " $\"48=2L%2B2%287%2F5%29L\"$
\n" ); document.write( " $\"48=2L%2B%2814%2F5%29L\"$
\n" ); document.write( " $\"48=%2810L%2B14L%29%2F5\"$ ----> $\"48=24L%2F5\"$ , cross multiply
\n" ); document.write( " $\"24L=48%2A5=240\"$ -----> $\"cross%2824%29L%2Fcross%2824%29=cross%28240%2910%2Fcross%2824%29\"$
\n" ); document.write( " $\"highlight%28L=10cm%29\"$
\n" ); document.write( "In condition 1:
\n" ); document.write( " $\"W=%287%2F5%2910=70%2F5=highlight%2814cm=W%29\"$
\n" ); document.write( "Check via EQN 1:
\n" ); document.write( " $\"48=2%2A10%2B2%2A14\"$
\n" ); document.write( " $\"48=20%2B28\"$
\n" ); document.write( " $\"48=48\"$
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo \n" ); document.write( "

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