document.write( "Question 147101: Please help me solve this word problem step-by-step.
\n" ); document.write( "(((The Perimeter of the rectangular is 320ft if the length is 5ft longer than twice the width. Find its length and width.)))
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Algebra.Com's Answer #107437 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
THe perimeter of a rectangle using length and width is given by,
\n" ); document.write( "\"P=2%2AL%2B2%2AW\"
\n" ); document.write( "For your case, the length is 5 ft longer than twice the width.
\n" ); document.write( "1.\"L=5%2B2%2AW\"
\n" ); document.write( "You also know that
\n" ); document.write( "2.\"P=2%2AL%2B2%2AW=320\"
\n" ); document.write( "Solve eq. 1 for 2W and substitute into eq. 2,
\n" ); document.write( "1.\"L=5%2B2%2AW\"
\n" ); document.write( "\"2%2AW=L-5\"
\n" ); document.write( "Substitute into eq. 2 and solve for L.
\n" ); document.write( "\"2%2AL%2B2%2AW=320\"
\n" ); document.write( "\"2%2AL%2B%28L-5%29=320\"
\n" ); document.write( "\"3%2AL-5=320\"
\n" ); document.write( "\"3%2AL-5%2B5=320%2B5\"
\n" ); document.write( "\"3%2AL=325\"
\n" ); document.write( "\"L=325%2F3\"
\n" ); document.write( "\"L=108.3\"
\n" ); document.write( "From eq. 1,
\n" ); document.write( "\"2%2AW=L-5\"
\n" ); document.write( "\"2%2AW=108.3-5\"
\n" ); document.write( "\"2%2AW=103.3\"
\n" ); document.write( "\"W=51.7\"
\n" ); document.write( "Check your answers.
\n" ); document.write( "\"2L%2B2W=320\"
\n" ); document.write( "\"2%28108.3%29%2B2%2851.7%29=320\"
\n" ); document.write( "\"216.6%2B103.4=320\"
\n" ); document.write( "\"320=320\"
\n" ); document.write( "True.
\n" ); document.write( "\"L=5%2B2W\"
\n" ); document.write( "\"108.3=5%2B2%2851.7%29\"
\n" ); document.write( "\"108.3=5%2B103.4\"
\n" ); document.write( "\"108.3=108.4\"
\n" ); document.write( "True (off because of roundoff error).
\n" ); document.write( "Your answers led to true statement.
\n" ); document.write( "They are good answers.\r
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