document.write( "Question 337043: This is one of our 4th graders math problems. My husband and I are usually good about helping him but for some reason this just confused us. Thanks for your help. He does have to show his work on his paper. Thank you again.\r
\n" ); document.write( "\n" ); document.write( "Each Morning Jarilyn runs a total distance of 42 city blocks and always chooses a rectangular running path. This morning her rectangular path was twice as long as it was wide. How many blocks long and how many blocks wide was this mornings rectangular path?
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Algebra.Com's Answer #241560 by nyc_function(2741)\"\" \"About 
You can put this solution on YOUR website!
Jarilyn is running around a path in the shape of a rectangle.\r
\n" ); document.write( "\n" ); document.write( "This means we are dealing with the perimeter if a rectangle.\r
\n" ); document.write( "\n" ); document.write( "The formula for finding the perimeter of a rectangle is P = 2L + 2W, where L is the length and w is the width.\r
\n" ); document.write( "\n" ); document.write( "Let P = perimeter\r
\n" ); document.write( "\n" ); document.write( "We are told that the length is twice as long as the width but we have no idea what the width is.\r
\n" ); document.write( "\n" ); document.write( "Let width = x\r
\n" ); document.write( "\n" ); document.write( "Let length = 2x\r
\n" ); document.write( "\n" ); document.write( "Let P = 42\r
\n" ); document.write( "\n" ); document.write( "We plug that into the perimeter formula above.\r
\n" ); document.write( "\n" ); document.write( "P = 2L + 2W\r
\n" ); document.write( "\n" ); document.write( "42 = 2 times (2x) + 2x\r
\n" ); document.write( "\n" ); document.write( "42 = 4x + 2x\r
\n" ); document.write( "\n" ); document.write( "42 = 6x\r
\n" ); document.write( "\n" ); document.write( "42/6 = x\r
\n" ); document.write( "\n" ); document.write( "7 = x\r
\n" ); document.write( "\n" ); document.write( "The width of the rectangular path is 7 and the length is twice 7 or 14.\r
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