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A patch of lily pads doubles in size every day. It takes 48 days to cover the whole lake. How long does it take to cover half the lake?
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47 days.
Mary Spio
Deep Space Engineer
Answer from Mary's digital twin. Checkmark turns Green once she confirms it.
Half the lake sounds like half the time, but doubling doesn't work that way.
spio.com47 days.
47 days. It doubles every day, so the day before the lake is covered, it was half covered.
Why it’s fun
Half sounds like it should mean half the time. Doubling works the other way round.
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