document.write( "Question 1053975: Hello there,
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document.write( "Here is my problem: A tank can be filled by one pump in 50 minutes and by another pump in 60 minutes. A third pump can drain the tank in 75 minutes. If all 3 pumps go into operation, how long will it take to fill the tank?\r
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document.write( "I made a table saying which pumps there are and how long it takes to fill the tank or drain. I keep getting an equation like so:\r
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document.write( "1/50x + 1/60x - 1/75x = 1\r
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document.write( "That simplifes to 7/300x = 1\r
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document.write( "Then x = 42.8571 repeated.\r
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document.write( "My Online Homework says this answer is wrong. Can you tell me what I am doing wrong?\r
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document.write( "Thank you!! \n" );
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Algebra.Com's Answer #669168 by ikleyn(52816)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "For many other similar solved problems on joint work 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 \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Read them and get be trained in solving joint-work problems.\r \n" ); document.write( " \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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the topic \"Rate of work and joint work problems\" of the section \"Word problems\".\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |