document.write( "Question 1091142: There are three small holes in a tub filled with water. If opened, hole one will empty the tub in 3 hours; hole 2 will empty the tub in 4 hours and hole 3 will empty the tub in 5 hours. If all 3 holes are opened at the same time, how long will it take to empty the tub? \n" ); document.write( "

Algebra.Com's Answer #705548 by ikleyn(52776) $\"\"$ $\"About$

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document.write( "The rate of the hole/drain 1 of emptying the tank is  of the tank volume per hour.\r\n" );
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document.write( "The rate of the hole/drain 2 is  of the tank volume per hour.\r\n" );
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document.write( "The rate of the hole/drain 3 is  of the tank volume per hour.\r\n" );
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document.write( "When all 3 holes are opened (all three drains are turned ON), their combined rate is  =  =  of the tank volume per hour.\r\n" );
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document.write( "Hence, it will take   hours =   hours to empty the tank if all three holes are opened.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "It is a typical joint work problem.\r
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\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 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( "    - Selected joint-work word problems from the archive \r
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\n" ); document.write( "\n" ); document.write( "Read them and get be trained in solving joint-work problems.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the topic
\n" ); document.write( "\"Rate of work and joint work problems\" of the section \"Word problems\".\r
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