Hey! What are you thinking about needing the most?
Hey there! I'm going camping in an extremely hot part of the country and would really like to have the most of water.
You can have 2 waters as long as I get 2 food. I have really hungry teenage boys coming with me and need as much as I can get. 
Would you like to have three food if I keep three waters?
I don't think that's necessarily fair since my boys will also need some extra water since they're running around a lot. I think the 2 and 2 deal is the most fair. 
Got it!
Ok so right now, we're at you have 2 water and 1 food, and I have 1 water and 2 food
If you're okay with it, I'm going to need the fires at night to keep the wildlife away. Could I do two wood for me and one for you?
Having two firewood is important for me also
How do you think we should settle this?