Teacher: In the same lift a size where a lot of people, density on the large, weight is the heaviest, another elevator rarely, density is small, and also the lightest weight friends.
Division: In the same size of the elevator, a person a lot, density is large, the weight is also the heaviest, another elevator people are few, density is small, the weight is the lightest.
Teacher: in an elevator of the same size, if there are many people, the density will be large and the weight will be the heaviest. If there are few people in another elevator, the density will be small and the weight will be the lightest.<br>