Maths Labyrinth: Brick Overboard

Answer: 55 minutes – The simplest way to picture this: the two bacteria only have a 5 minute ‘head start’ on the single bacterium, after which the two processes are identical.

“The Minotaur is far behind you”


A heavy brick is resting in a boat in a very small lake. The brick is then thrown out of the boat and into the lake. What happens to the water level?

Nothing changes

The water level rises

The water level falls