Water lilies double in area every 24 hours. In spring, there is one water lily on a lake. In sixty days the lake is completely covered with lilies. How many days did it take to cover half of the lake?
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59. It doubles every day, so day 60 it covers the whole lake, one day before (59) it is covering half the lake.
Reply:this question is confusing because there is only one water lily on a lake but in sixty days the lake is completely covered with "lilies." am i on the right track?
Reply:59.
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