You are mixing up a recipe that requires 7:3:2:1 flour, water, sugar, butter.1 When you are done, you should have 39 cups of batter. How many cups of each ingredient do you need?1 Please show your work. Hint: this is really a total proportion problem and you will want to set up 3 to 4 proportions to find the result. 1 Flour = cups. 1 Water = cups. 1 Sugar = cups. 91 Butter = cups. "