document.write( "Question 1069062: Alvin and Geraldine are addressing invitations to their wedding. Alvin can address one every thirteen seconds and Geraldine can do one in 40 seconds. how long will t take them to address 140 invitations? \n" ); document.write( "
Algebra.Com's Answer #684336 by ikleyn(52921)\"\" \"About 
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\n" ); document.write( "Alvin and Geraldine are addressing invitations to their wedding. Alvin can address one every thirteen seconds and Geraldine
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document.write( "Alvin is adressing \"1%2F13\" of an invitation per second.\r\n" );
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document.write( "Geraldine is adressing \"1%2F40\" of an invitation per second.\r\n" );
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document.write( "Working together, they are addressing \"1%2F13+%2B+1%2F40\" of an invitation per second.\r\n" );
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document.write( "\"1%2F13+%2B+1%2F40\" = \"40%2F%2813%2A40%29+%2B+13%2F%2813%2A40%29\" = \"53%2F520\".\r\n" );
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document.write( "Hence, it will require \"140%2F%28%2853%2F520%29%29\" seconds to complete the job.\r\n" );
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\n" ); document.write( "\n" ); document.write( "For a wide variety of 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
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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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