SOLUTION: A patch of lily pads doubles its size each day after it starts growing in the pond. If a pond was completely covered just today, what part of it was covered in lily pads five days
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Question 55504: A patch of lily pads doubles its size each day after it starts growing in the pond. If a pond was completely covered just today, what part of it was covered in lily pads five days ago?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
yesterday 1/2 of the pond was covered
day before that (1/2)of (1/2) or 1/4th was covered.
day before that 1/8th was covered
etc.
5 days before (1/2)^5 = 1/32 nd of the pond was covered.
Cheers,
Stan H.
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