document.write( "Question 118234: 15 scientists working 6 hrs. a day can make a big machinery in 20 days. In how many days 5 scientists make that machinery working 12 hrs. a day? \n" ); document.write( "

Algebra.Com's Answer #86337 by josmiceli(19441) $\"\"$ $\"About$

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(Number of scientists)(hours worked per scientist) = Total hours
\n" ); document.write( "(rate1) = (rate2)
\n" ); document.write( "rate1 = rate2 = (1 big machine / total hours)
\n" ); document.write( " $\"1%2F%286%2A15%2A20%29+=+1%2F%285%2A12%2Ad%29\"$
\n" ); document.write( " $\"1%2F1800+=+1%2F60d\"$
\n" ); document.write( " $\"60d+=+1800\"$
\n" ); document.write( " $\"d+=+30\"$ days answer \n" ); document.write( "

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