document.write( "Question 947277: The time to complete a project is inversely proportional to the number of people who are working on the project. A class project can be completed by 3 students in 20 days. In order to finish the project in 5 days how many more students should the group add? \r
\n" ); document.write( "\n" ); document.write( "I got 3/20=x/5
\n" ); document.write( "Then I cross multiply
\n" ); document.write( " 20x=15
\n" ); document.write( "Then I divided both sides by 20x which I got 0.75
\n" ); document.write( "Please help I know the answer is wrong but I cannot figure out the answer
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Algebra.Com's Answer #577984 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
The time to complete a project is inversely proportional to the number of people who are working on the project.\r
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\n" ); document.write( "\n" ); document.write( "Choosing t and n for variables in the corresponding places in the description,\r
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\n" ); document.write( "\n" ); document.write( "t is inversely proportional to the n.\r
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\n" ); document.write( "\n" ); document.write( "Let k be the proportionality constant or variation constant.\r
\n" ); document.write( "\n" ); document.write( "\"highlight_green%28t=k%2Fn%29\".\r
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\n" ); document.write( "\n" ); document.write( "Next part of problem description:
\n" ); document.write( "n=3, t=20;\r
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\n" ); document.write( "\n" ); document.write( "That data allows you to find a value for k.
\n" ); document.write( "\"t=k%2Fn\"
\n" ); document.write( "\"t%2An=%28k%2Fn%29%2An\"
\n" ); document.write( "\"t%2An=k\"
\n" ); document.write( "-
\n" ); document.write( "\"k=20%2A3\"
\n" ); document.write( "\"highlight_green%28k=60%29\"\r
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\n" ); document.write( "\n" ); document.write( "The question part asks for a difference, but you can very well still find how many students.
\n" ); document.write( "t=5, you now know k, what is n?\r
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\n" ); document.write( "\n" ); document.write( "--\r
\n" ); document.write( "\n" ); document.write( "Not clear enough? The variation equation was according to description,
\n" ); document.write( "\"t=k%2Fn\"
\n" ); document.write( "and the data given allowed to find k=60, so the variation equation is
\n" ); document.write( "\"t=60%2Fn\";
\n" ); document.write( "You want to know n for t=5.
\n" ); document.write( "SOLVE FOR n.
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\n" ); document.write( "\"tn=60\"
\n" ); document.write( "\"n=60%2Ft\"
\n" ); document.write( "\"n=60%2F5\"
\n" ); document.write( "\"highlight_green%28n=12%29\", THIS IS HOW MANY STUDENTS NEEDED.\r
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\n" ); document.write( "\n" ); document.write( "Again reminder, the question asks for a DIFFERENCE.
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