document.write( "Question 87892: Word problem:
\n" ); document.write( "Rectangular range length of missile is 65 miles less than 5 times the width. If the missile will cover a perimeter of 800 square miles, what is the length and width of the rectngular range??
\n" ); document.write( "Step 1: Assign the variables
\n" ); document.write( "Step 2: Write algebraic model
\n" ); document.write( "Step 3: Solve the model - using substitution, linear combination etc...
\n" ); document.write( "step 4: Answer
\n" ); document.write( "Thanks
\n" ); document.write( "BBB \n" ); document.write( "
Algebra.Com's Answer #63797 by SandySharma(35)\"\" \"About 
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Let x be the width of the Rectangular range of the missile.
\n" ); document.write( "then, the length will be 5x - 65\r
\n" ); document.write( "\n" ); document.write( "Perimeter = 2*(length +width)
\n" ); document.write( " = 2*( x + 5x - 65)
\n" ); document.write( " = 2*(6x - 65)\r
\n" ); document.write( "\n" ); document.write( "Given, perimeter = 800
\n" ); document.write( "so, 2*(6x - 65) = 800
\n" ); document.write( "12x - 130 = 800
\n" ); document.write( " Add 130 on both sides\r
\n" ); document.write( "\n" ); document.write( "12x = 930\r
\n" ); document.write( "\n" ); document.write( "divide by 12\r
\n" ); document.write( "\n" ); document.write( "x = 77.5\r
\n" ); document.write( "\n" ); document.write( "width = 77.5
\n" ); document.write( "length = 5*77.5 -65 = 322.5\r
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