In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?

47 days

Step-by-step explanation:

if the lake doubles its size every day, then

if the whole lake was covered in 48 days,

half the lake was covered the day before,

so, the answer is 47 days

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