document.write( "Question 1030798: Sam can paint the classroom in 5 hours and working with Sal they can paint the room in 3 hours. How long does it take sal to paint the room alone? \n" ); document.write( "
Algebra.Com's Answer #645607 by ikleyn(52797)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "Sam can paint the classroom in 5 hours and working with Sal they can paint the room in 3 hours. How long does it take Sal to paint the room alone?
\n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\r\n" );
document.write( "Sam's rate of work is  \"1%2F5\"  of the room painted surface per hour.\r\n" );
document.write( "\r\n" );
document.write( "Sams and Sal's combined rate of work is  \"1%2F3\"  of the room area per hour when they work together.\r\n" );
document.write( "\r\n" );
document.write( "Hence, Sal's rate of work is the difference\r\n" );
document.write( "\r\n" );
document.write( "\"1%2F3+-+1%2F5\" = \"5%2F15+-+3%2F15\" = \"2%2F15\" of the room area per hour.\r\n" );
document.write( "\r\n" );
document.write( "It means that Sal takes \"15%2F2\" = \"7\"\"1%2F2\" hours to pint the room working alone.\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "For many other similar problems on joint work, you can find their detailed solutions in these lessons\r
\n" ); document.write( "\n" ); document.write( "    - Using Fractions to solve word problems on joint work \r
\n" ); document.write( "\n" ); document.write( "    - Solving more complicated word problems on joint work \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );