document.write( "Question 1192446: One crew can put up holiday decorations in the mall in 8 hours. If a slower crew can put up the decorations in 10 hours, how long will it take if both crews work together? \n" ); document.write( "

Algebra.Com's Answer #824319 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Rate of work of the first crew is    of the job per hour;\r\n" );
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document.write( "rate of work of another crew is    of the job per hour\r\n" );
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document.write( "and the combined rate of work is the sum   =  =  =   of the job per hour.\r\n" );
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document.write( "It means that the entire job will be completed by the two crews in    hours = 4  hours = 4 hours, 26 minutes and 40 seconds.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "On the way, from my post you learned three important things:\r
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document.write( "    (1)  what is the rate of work;\r\n" );
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document.write( "    (2)  that the combined rate of work is the sum of individual rates;\r\n" );
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document.write( "    (3)  and how to use the gained knowledge to solve this one and many other similar problems.\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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