document.write( "Question 1019723: Suppose an average professor can do a certain job in nine hours and an average student can do the same job in 6 hours. If three professors and two students work together, how long will the job take? \n" ); document.write( "

Algebra.Com's Answer #635670 by ikleyn(52810) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "Suppose an average professor can do a certain job in nine hours and an average student can do the same job in 6 hours.
\n" ); document.write( "If three professors and two students work together, how long will the job take?
\n" ); document.write( "-----------------------------------------------------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "The rate of each professor is  job-per-hour.\r\n" );
document.write( "\r\n" );
document.write( "The rate of each student is  job-per-hour.\r\n" );
document.write( "\r\n" );
document.write( "The rate of the tree professors and 2 students working simultaneously is\r\n" );
document.write( "\r\n" );
document.write( " +  =   job-per-hour.\r\n" );
document.write( "\r\n" );
document.write( "Hence, it will take  =  an hour for three professors and two students to get the job complete if they work together.\r\n" );
document.write( "\r\n" );
document.write( "Answer. In  an hour.\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "See the lesson Using fractions to solve word problems on joint work in this site for many other samples
\n" ); document.write( "of solved problems on joint work.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );