Why an egg is released into a water-filled container it will get drowned, but if the container is filled with salted water, then the egg will float?

Why an egg is released into a water-filled container it will get drowned, but if the container is filled with salted water, then the egg will float?

The density of clear water (1000 kg m^-3) is less than the density of salted water (1024 kg m^-3). That's why buoyancy in salted water is much more than in clear water. So, in salted water, the object will feel much upward force than in clear water. That's why egg floats in salted water.