document.write( "Question 1075948: Jane can assemble a computer by herself in 40 minutes. James can do it in 35 mimutes. How long will it take them working together? \n" ); document.write( "

Algebra.Com's Answer #690606 by ikleyn(52787) $\"\"$ $\"About$

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\n" ); document.write( "The formal solution is THIS:\r
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document.write( "Jane makes  of the job per minute.\r\n" );
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document.write( "Janes makes  of the job per minute.\r\n" );
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document.write( "Working together, they make  =  =  =  of the job per minute.\r\n" );
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document.write( "Hence, they will complete the job in  minutes =  minutes = 18 minutes and 40 seconds.\r\n" );
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\n" ); document.write( "\n" ); document.write( "I call this solution \"formal\", since I assume (without a proof; as granted) that their rates can be summed in this job.\r
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\n" ); document.write( "\n" ); document.write( "For a wide variety of similar solved joint-work problems with detailed explanations 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
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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 \"Rate of work and joint work problems\" of the section \"Word problems\".\r
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