Five machines at a certain factory operate at the same constant rate.
Five machines at a certain factory operate at the same constant rate. If four of these machines, operating simultaneously, take 25 hours to fill a certain production order, how many fewer hours does it take all five machines, operating simultaneously, to fill the same production order?
Answer/Solution
5
Steps/Work
Total work = 4*25 machine hrs
Time taken = 4* 25 /5 => 20 hours...
Thus all five machines, operating simultaneously will take ( 25 - 20 ) 5 hours..
Answer will be (B) 5
Time taken = 4* 25 /5 => 20 hours...
Thus all five machines, operating simultaneously will take ( 25 - 20 ) 5 hours..
Answer will be (B) 5