document.write( "Question 972439: A classroom has a length that is 6 metres shorter than its width. If the perimeter is 30m, what is the length and width?
\n" ); document.write( "(Ice-em 9 book)
\n" ); document.write( "Thank you !
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Algebra.Com's Answer #594755 by satyareddy22(84)\"\" \"About 
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Let l be the length,w be the width.
\n" ); document.write( "w - l = 6 (given)-------------(1)
\n" ); document.write( "perimeter = 30
\n" ); document.write( "=> 2(l+w) = 30 => l + w = 30/2 =15------(2)
\n" ); document.write( "Solving (1) & (2)
\n" ); document.write( "w-l=6
\n" ); document.write( "w+l=15
\n" ); document.write( "=> 2w =21 =>w=21/2=10.5m
\n" ); document.write( "l= 4.5m
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