The sugar is organic and is soluable in organic solvents like alcohol. Salt is insoluable in alcohol. So if you add alcohol to the mixture, filter out the salt, and evaporate the alcohol then sugar will be left
You pour a pound of salt and a pound of sugar on a table. Mix together, then seperate the two with boxing gloves on.
Salt will not dissolve with water sa with filtration we can separate it and sugar will be left