document.write( "Question 954639: A rectangular property has a perimeter of 22km. Fifteen times the length is 40 times the breadth. What is the area? \n" ); document.write( "
Algebra.Com's Answer #586269 by macston(5194)\"\" \"About 
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L=length; W=width (or breadth); A=area; P=perimeter=22km
\n" ); document.write( "\"15L=40W\"
\n" ); document.write( "\"L=%2840%2F15%29W=%288%2F3%29W\"
\n" ); document.write( "\"P=2%28L%2BW%29\" Substitute for L
\n" ); document.write( "\"22km=2%28%28%288%2F3%29W%29%2BW%29\" Divide each side by 2.
\n" ); document.write( "\"11km=%2811%2F3%29W\" Multiply each side by 3/11
\n" ); document.write( "\"3km=W\" The width is 3 kilometers.
\n" ); document.write( "\"15L=40W\"
\n" ); document.write( "\"15L=40%283km%29\"
\n" ); document.write( "\"L=120km%2F15\"
\n" ); document.write( "\"L=8km\" The length is 8 kilometers.
\n" ); document.write( "A=L*W=8km*3km=24 sq km ANSWER: The area is 24 square kilometers.
\n" ); document.write( "CHECK:
\n" ); document.write( "P=2(L+W)
\n" ); document.write( "22km=2(8km+3km)
\n" ); document.write( "22km=2(11km)
\n" ); document.write( "22km=22km
\n" ); document.write( "
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