SOLUTION: The number of days required to build a bridge is varies inversely to the number of workers. If it requires twelve workers ten days to build the bridge, how long would it take 30 w

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Question 765033: The number of days required to build a bridge is varies inversely to the number of workers. If it requires twelve workers ten days to build the bridge, how long would it take 30 workers to build the bridge? Let time be t, number of workers be w.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+w+=+k%2A%28+1%2Ft+%29+
+12+=+k%2A%28+1%2F10+%29+
+k+=+120+
and
+30+=+120%2A%281%2Ft%29+
+30t+=+120+
+t+=+4+
It will take 4 days for 30 workers
to build the bridge