Elearning exercise

I found the e-learning excercise very interesting as the second video, about the cars had thought me how
to find density. After I knew how to find density from the 3 pages, i finally understood why the egg floated
when the water was mixed with salt. It was because when it was mixed with the salt, the mass of the water with salt
increased, thus since the formula to find density is mass/volume, and the mass increased, the density of the water
in turn also increased. So when the density of the water was greater than the egg, the egg floated.