How many salt is added to an egg to float?

Adding salt to the water increases its density. On adding certain quantity of salt, the density of water becomes greater than that of egg.So by law of flotation, as the mass of water (salted)...

When salt is added to water, the density of water increases. Therefore the density of egg becomes less than the density of water therefore it begins to float in water.

This is because Salt adds density to the water. In other words, by adding and dissolving salt in the water, you make the water heavier than the egg.

none cause the egg will already float with out any salt the salt would bring it down

LOTS!.