document.write( "Question 1189257: A rectangular piece of fabric is 4 times as long as its width. If it is 25% shorter and 200% wider, it will become a square piece of fabric with an area of 36 m2. What are the dimensions of the piece of fabric? \n" ); document.write( "
Algebra.Com's Answer #820565 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "I'm quite astonished by this problem. The statement of the problem is 100% correct both grammatically and mathematically. That is almost NEVER the case when a phrase like \"200% wider\" is used.

\n" ); document.write( "I applaud the author of the problem for using correct English!

\n" ); document.write( "\"A rectangular piece of fabric is 4 times as long as its width.\"

\n" ); document.write( "Let the width be x; then the length is 4x.

\n" ); document.write( "\"If it is 25% shorter and 200% wider...\"

\n" ); document.write( "25% shorter means 75% as long; 75% of 4x is 3x.

\n" ); document.write( "200% wider means the width is INCREASED by 200%, which means it becomes 100%+200% = 300% AS WIDE, or 3 times AS WIDE as it was; 3 times x is 3x.

\n" ); document.write( "\"...it will become a square piece of fabric...\"

\n" ); document.write( "Indeed it will be -- the length and width are both 3x.

\n" ); document.write( "\"... with an area of 36 m^2\"

\n" ); document.write( "\"%283x%29%283x%29=36\"
\n" ); document.write( "\"9x%5E2=36\"
\n" ); document.write( "\"x%5E2=4\"
\n" ); document.write( "\"x=2\" (obviously we reject the solution x=-2, since it makes no sense as the width of the piece of fabric)

\n" ); document.write( "ANSWERS: width = x = 2m; length = 4x = 8m

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