be the same size, and the liquid levels look almost identical.
That makes it tempting to focus on the type of liquid.
But the real clue is the position of the openings.
The outlet on Tank A is positioned slightly lower than the outlet on Tank B. That means the liquid in Tank A can continue draining until the water level reaches that lower point.
So, Which One Wins?
The answer is A — the water tank.
The important factor isn’t simply whether the tank contains water or milk. It’s the
