Waterlily maths
Algebra
Level
1
A waterlily doubles its size every day. If it needs 50 days to cover half of the lake, how many days does it need to cover the whole lake?
75
51
99
100
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1 solution
it doubles itself everyday.
so if it is 2 1 today ,it will be full tomorrow.
so, if it is half at the 50th day ,it will be full the next day or at the 51th day.