Lemonade Stand Costs?

from blog Jeff Kaufman's Writing, | ↗ original
My kids were thinking of having a lemonade stand, and in the past I've said that if they're doing it as a fundraiser we'll cover the cost of ingredients, but if they're doing it for their own money then they need to reimburse us. But how much should that be? The recipe they're using is approximately: 2C lemon juice 2C sugar Water Ice Plus cups to...