document.write( "Question 1130918: The worlds biggest led screen is in a small mall in Bejing, China its length is ten meters more than eight times in width. the total screen area is a whooping 7,500 square meters \n" ); document.write( "

Algebra.Com's Answer #747573 by ikleyn(52775) $\"\"$ $\"About$

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document.write( "Step 1.  It is clear, that the basic equation is\r\n" );
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document.write( "             W*(8W + 10) = 7500.\r\n" );
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document.write( "         Multiply both sides by 8:\r\n" );
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document.write( "             8W*(8W+10) = 8*7500,    or   8W*(2W+10) = 60000.\r\n" );
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document.write( "Step 2.  What are two numbers that differ by 10 and give 60000 when multiplied ?\r\n" );
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document.write( "             Look into   = 244.95.\r\n" );
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document.write( "         Then in 5 seconds you get  that the numbers are  240 and 250.\r\n" );
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document.write( "         After that, you final move is \r\n" );
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document.write( "              8W = 240,   which  implies  W = 240/8 = 30.\r\n" );
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