There were 4 kids; 3 brothers and a friend. They all went into a local restaurant and ordered some water. The friend bought the same water the brothers had, but paid more. Assume they all drank bottled water, drank at the same time, drank the same amount, and only drank the water they paid for. If nothing happened to the water after, why is it that only one bottle is empty?
Note from the Author:
I did make this up, it may have some flaws, but I did use this a few times to see if it worked first.