document.write( "Question 1008420: jess and her husband made a rectangular swimming pool measuring 28 feet by 42 feet. They want to add a decorative tile border of uniform width around sides of the pool. How wide can they make the tile border if they purchased enough tile to cover 624 square feet? \n" ); document.write( "

Algebra.Com's Answer #624182 by josgarithmetic(39617) $\"\"$ $\"About$

You can put this solution on YOUR website!
First, try to make this more general using variables for all quantities.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"system%28x=28%2Cy=42%2CA=624%29\"$
\n" ); document.write( "The x and y are pool dimensions, and A is the upper surface tile area surrounding the pool.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "How wide is the uniform width border around the pool? Call this $\"highlight_green%28u%29\"$ .\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Area of just the pool upper surface: $\"xy\"$
\n" ); document.write( "Area of tile border and the pool: $\"%28x%2B2u%29%28y%2B2u%29\"$
\n" ); document.write( "Area of just the tile border: $\"%28x%2B2u%29%28y%2B2u%29-xy=A\"$
\n" ); document.write( "-
\n" ); document.write( "The unknown variable, which is the question asked, is u.
\n" ); document.write( "Solve for u.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Can you decide what to do with that? \n" ); document.write( "

\n" );