A patch of lily pads doubles in size every day. If it takes 48 days for the patch to completely cover an entire lake, on which day was the lake exactly half-covered?
Day 47
Because the patch doubles every day, it was half its total size one day before full coverage, which corresponds to Day 47.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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