document.write( "Question 315318: A contractor estimated that 30 ft^3 of cement is required to make a concrete floor that measure 90 ft^2. Using this estimate, how much cement is required to make a concrete floor that measures 120ft^2? \n" ); document.write( "

Algebra.Com's Answer #225661 by rfer(16322) $\"\"$ $\"About$

You can put this solution on YOUR website!
30/90=x/120
\n" ); document.write( "90x=3600
\n" ); document.write( "x=40 cu ft \n" ); document.write( "

\n" );