document.write( "Question 879900: The number of workers is required to complete a job varies inversely as the time spent working. It takes 4 hours for 20 workers to raise a barn. How long would it take 25 people to raise a barn? (In order to receive credit you must use a system of equations.) \n" ); document.write( "
Algebra.Com's Answer #531112 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Unsure if you want this as a inverse variation problem or as a uniform rates problem.\r
\n" ); document.write( "\n" ); document.write( "As written, n for count of workers, t for time in hours,
\n" ); document.write( "\"n=k%2Ft\" is the translation of the first sentence.\r
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\n" ); document.write( "\n" ); document.write( "Second sentence, first part, after solving the formula for k,
\n" ); document.write( "\"k=n%2At\"
\n" ); document.write( "\"k=20%2A4\"
\n" ); document.write( "\"k=80\"\r
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\n" ); document.write( "\n" ); document.write( "The variation formula can now be more specifically given as \"n=80%2Ft\".\r
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\n" ); document.write( "\n" ); document.write( "Third sentence, n=25, t is unknown. Find t.
\n" ); document.write( "\"25=80%2Ft\"
\n" ); document.write( "\"1%2F25=t%2F80\"
\n" ); document.write( "\"t=80%2F25\"
\n" ); document.write( "\"t=16%2F5\"
\n" ); document.write( "\"t=3%261%2F5\" hours
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