How long could an 80kg woman last without food, but still had access to a bit of water?

well going through this being its water you might be able to go with out food for a while but the body can't go with out water for more then 3 days mabe 4 but even thats not healthy either one going with out them isn't healthy at all if your doing any of this you should go to your dr and get some help some one who can listen becareful think about what i'm saying all the wrong reasons