A punch recipe says to mix 4 cups of pineapple juice, 8 cups of orange juice, and 12 cups seltzer to make 18 servings. how many cups do you need of each to make 108 servings

108/18 = 6

so just multiply all the amounts by 6.

108 / 18 = 6

Multiply each ingredient for 18 servings by 6.
6 * 4 = 24
etc.

To figure out how many cups you need of each ingredient to make 108 servings, let's first calculate the ratio of the ingredients used in the original recipe.

According to the original recipe, you need:

- 4 cups of pineapple juice
- 8 cups of orange juice
- 12 cups of seltzer

Now, let's calculate the ratio by dividing the cups required by the number of servings in the original recipe. This will give us the cups per serving:

- Pineapple juice: 4 cups / 18 servings = 0.22 cups per serving
- Orange juice: 8 cups / 18 servings = 0.44 cups per serving
- Seltzer: 12 cups / 18 servings = 0.67 cups per serving

Next, we can multiply the cups per serving by the number of servings you want (108) to determine how much of each ingredient you'll need:

- Pineapple juice: 0.22 cups per serving * 108 servings = 23.76 cups (~24 cups)
- Orange juice: 0.44 cups per serving * 108 servings = 47.52 cups (~48 cups)
- Seltzer: 0.67 cups per serving * 108 servings = 72.36 cups (~72 cups)

Therefore, to make 108 servings of punch, you would need approximately 24 cups of pineapple juice, 48 cups of orange juice, and 72 cups of seltzer.