document.write( "Question 6878: Could you please help me with this? \r
\n" ); document.write( "\n" ); document.write( "Suppose 240 square tiles, each 25 cm on a side, are needed to cover a rectangular floor. The floor is 5 meters long. How wide is the floor?
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Algebra.Com's Answer #3784 by glabow(165)\"\" \"About 
You can put this solution on YOUR website!
Let's get everything in meters. A tile is .25 meters on a side.
\n" ); document.write( "How many tiles would it take to make one strip of tiles 5 meters long?
\n" ); document.write( "Hint: it takes 4 tiles to cover a meter. To cover 5 meters would take ....?
\n" ); document.write( "Let's call the number of tiles used in a strip \"x.\"
\n" ); document.write( "Next, how many stips of 5 meters do we have to cover the floor? However many there are, the total number of tiles used is 240. The total number of tiles in each strip with length 5 meters is x. We have 240/x strips!
\n" ); document.write( "Now, how wide is each strip? .25 meters because they are square tiles.
\n" ); document.write( "So if we divide the number of strips we have that are .25 meters wide by 4, we have calculated how many strips we have that are a meter wide. And that's how wide the floor is!\r
\n" ); document.write( "\n" ); document.write( "Numerically,
\n" ); document.write( "5 / .25 = 20
\n" ); document.write( "240/20 = 12
\n" ); document.write( "12 / 4 = 3\r
\n" ); document.write( "\n" ); document.write( "If you follow all this you would say the floor is 5 x 3 meters.
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