Question

A lily pad doubles in area every second. After one minute, it fills the pond. How long would it take to quarter fill the pond ?
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Answer 1

Answer:

58 minutes

Step-by-step explanation:

Given that the pond will be covered in one hour and that it doubles in size every minute, at one minute prior to the hour the pond would be half covered. Continuing this line of thought, if we go back another one minute, the pond would be a quarter covered, so the answer is 58 minutes.

Answer 2

Answer:

15 seconds

Step-by-step explanation:

1min=60sec

to fill the 1 whole pond or 4/4it took 60sec

to fill 4/4 it took 60 sec

to fill 1/4 it will take 60×1/4=15sec