document.write( "Question 1027713: Three workers can do a job in 28 hours. How many more workers are needed to do this job in 12 hours?\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #642929 by Edwin McCravy(20081) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "The other tutor's answer is very wrong.\r\n" );
document.write( "

\n" ); document.write( "Three workers can do a job in 28 hours. How many more workers
\n" ); document.write( "are needed to do this job in 12 hours?
\n" ); document.write( "

\r\n" );
document.write( "The fewer workers there are the more the hours that are required, \r\n" );
document.write( "and the more workers there are, the fewer hours that are required.\r\n" );
document.write( "\r\n" );
document.write( "Therefore workers and hours are inversely proportional.\r\n" );
document.write( "\r\n" );
document.write( "The word \"inversely\" is a form of the word \"invert\".\r\n" );
document.write( "So we invert one of the fractions in the proportion. It doesn't\r\n" );
document.write( "matter which one we invert.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "7 workers are required, so we need 7-3 or 4 more workers.  \r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( "

\n" );