document.write( "Question 955126: What pictures demonstrates \"Jane can paint a 12-foot by 12-foot wall in 3/4 of an hour? How long will it take her to paint another wall that is 15x16 feet?\" \n" ); document.write( "

Algebra.Com's Answer #583417 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
The areas of the 2 walls are in the
\n" ); document.write( "same ratio as the times required to paint them:
\n" ); document.write( "( area 1 ) / ( area 2 ) = ( time 1 ) / ( time 2 )
\n" ); document.write( " $\"+%28+12%2A12+%29+%2F+%28+15%2A16+%29+=+%28%28+3%2F4+%29%29+%2F+t+\"$
\n" ); document.write( "where $\"+t+\"$ is in hrs
\n" ); document.write( " $\"+144+%2F+240+=+%28%28+3%2F4+%29%29+%2F+t+\"$
\n" ); document.write( "Multiply both sides by $\"+240t+\"$
\n" ); document.write( " $\"+144t+=+180+\"$
\n" ); document.write( " $\"+t+=+180%2F144+\"$
\n" ); document.write( " $\"+t+=+1.25+\"$
\n" ); document.write( "The larger wall will take 1 hr 15 min to paint\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );