document.write( "Question 1205982: One pump can fill a tank with oil in 4 hours. A second pump can fill the same tank in 3 hours. If both pumps are used at the same time, how long will they take to fill the tank?\r
\n" ); document.write( "\n" ); document.write( "I tried everything but the answer that I had wrote down from my teacher's answer is 12/7 hours \n" ); document.write( "

Algebra.Com's Answer #843119 by ikleyn(52864) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "Your answer is correct.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( " +  =  +  = .\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "ANSWER.   hours.  It is 1 hours = 1 hour and 42.857 minutes.\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "Solved.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Why do you panic ?\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "----------------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "It is a standard and typical joint work problem.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "There is a wide variety of similar solved joint-work problems with detailed explanations in this site. See the lesson\r
\n" ); document.write( "\n" ); document.write( " - Using Fractions to solve word problems on joint work \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Read it and get be trained in solving joint-work problems.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );