document.write( "Question 1184425: Is it 90 minutes? I want to check my answer.\r
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\n" ); document.write( "\n" ); document.write( "Ali has hired Mark and Alexis to work for his shipping company. Mark can load a truck with packages in 120 minutes. Alexis can load the same number of packages in 240 minutes.\r
\n" ); document.write( "\n" ); document.write( "If Mark and Alexis work together on a particular truck, they can load all of the packages in 90 minutes.
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Algebra.Com's Answer #814995 by ikleyn(52777) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "Ali has hired Mark and Alexis to work for his shipping company.
\n" ); document.write( "Mark can load a truck with packages in 120 minutes.
\n" ); document.write( "Alexis can load the same number of packages in 240 minutes.
\n" ); document.write( "If Mark and Alexis work together on a particular truck, they can load all of the packages in 90 minutes.
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\n" ); document.write( "\n" ); document.write( "As you posed, worded and presented the problem in your post, it is I N C O R R E C T.\r
\n" ); document.write( "\n" ); document.write( "This incorrect formulation confuses YOU and other readers.\r
\n" ); document.write( "\n" ); document.write( "THEREFORE, I reformulate the problem AS IT SHOULD BE.\r
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document.write( "    Ali has hired Mark and Alexis to work for his shipping company. \r\n" );
document.write( "    Mark can load a truck with packages in 120 minutes. \r\n" );
document.write( "    Alexis can load the same number of packages in 240 minutes.\r\n" );
document.write( "    If Mark and Alexis work together, how long will it take to load a truck ?\r\n" );
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\n" ); document.write( "\n" ); document.write( "For this COPRRECTLY POSED PROBLEM, see my solution below.\r
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document.write( "Mark makes    of the job per hour.  It is his rate of work.\r\n" );
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document.write( "Alexis makes    part of the job per hour.  It is his rate of work.\r\n" );
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document.write( "Working together, they make   =  =   of the job per hour.\r\n" );
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document.write( "It means that they will complete the entire job in    hours, working together.\r\n" );
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document.write( "  hours is  1 hour and 20 minutes.\r\n" );
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document.write( "ANSWER.  They will complete the job in 1 hour and 20 minutes.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\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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\n" ); document.write( "\n" ); document.write( "When you present a problem to the forum,   DO NOT MIX IT with your thoughts.\r
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\n" ); document.write( "\n" ); document.write( "Do not make this soup.\r
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\n" ); document.write( "\n" ); document.write( "Place these subjects SEPARATELY.\r
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