document.write( "Question 1153330: It takes a printer 15 hours to print the class schedules for all of the students in a college. A faster printer can do the job in 9 hours. How long will it take to do the job if both printers are used? \n" ); document.write( "
Algebra.Com's Answer #775532 by ikleyn(52778)\"\" \"About 
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document.write( "The slower printer makes  \"1%2F15\"  of the job per hour.\r\n" );
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document.write( "The faster printer can make  \"1%2F9\"  of the job per hour.\r\n" );
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document.write( "Working together, the printers make \"1%2F15\" + \"1%2F9\"  of the job per hour.\r\n" );
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document.write( "    \"1%2F15\" + \"1%2F9\" = \"3%2F45+%2B+5%2F45\" = \"8%2F45\"  of an hour.\r\n" );
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document.write( "It means, that the two printers will complete the job in  \"45%2F8\"  hours = \"5\"\"5%2F8\" hours = 5 hours and 37.5 minutes.\r\n" );
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document.write( "ANSWER.  The two printers will complete the job in  \"45%2F8\"  hours = \"5\"\"5%2F8\" hours = 5 hours and 37.5 minutes.\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is a standard and 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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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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