SOLUTION: four bacteria are placed in a jar, and the number of bacteria doubles everyday. the jar is full at the end of 28 days. how long did it take the bacteria to fill half the jar?

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Question 478012: four bacteria are placed in a jar, and the number of bacteria doubles everyday. the jar is full at the end of 28 days. how long did it take the bacteria to fill half the jar?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
Since the bacteria double every day, the jar was half full the day before it was completely full; so the jar was half full after the 27th day..