document.write( "Question 80622: The perimeter of a rectanglar pool is 140 yards. If the length is 10 yadrs more than the width, find the dimentions of the pool. \n" ); document.write( "

Algebra.Com's Answer #57893 by tutor_paul(519) $\"\"$ $\"About$

You can put this solution on YOUR website!
In this problem, you have 2 equations with 2 unknowns. That means you can solve for the unknowns:
\n" ); document.write( "Since you are given the perimeter, you can derive your first equation from that:
\n" ); document.write( "Equation #1: $\"P=2L%2B2W=140\"$
\n" ); document.write( "You are also given the fact that the length is 10 yards more than the width. This forms the basis of your second equation:
\n" ); document.write( "Equation #2: $\"L=W%2B10\"$
\n" ); document.write( "Now that you have established the 2 equations, you are ready to go. First, plug in your expression for L from Equation #2 into Equation #1 and solve for W:
\n" ); document.write( " $\"2%28W%2B10%29%2B2W=140\"$
\n" ); document.write( " $\"2W%2B20%2B2W=140\"$
\n" ); document.write( " $\"4W=120\"$
\n" ); document.write( " $\"highlight%28W=30%29\"$
\n" ); document.write( "Now, you can plug this value of W into Equation #2 and get L:
\n" ); document.write( " $\"L=30%2B10\"$
\n" ); document.write( " $\"highlight%28L=40%29\"$
\n" ); document.write( "Good Luck,
\n" ); document.write( "tutor_paul@yahoo.com \n" ); document.write( "

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