You begin to fill a bucket with water at 9 am. Each minute you double the amount of water in the bucket. If it takes you 1 hour to fill the bucket, at what time is the bucket one-quarter full?

2 answers

it's full at 10

half full at 9:59

a quarter full at 9:58
9:58 one-quarter full
9:59 half full
10:00 full