Vicky uses 1 2/3 cup milk for a muffin recipe. If she wants to make 3 times the amount of muffins, how much milk will she use?

(5/3) * 3 = 15/3 = 5 cups

To find out how much milk Vicky will use if she wants to make 3 times the amount of muffins, we need to determine 3 times the amount of 1 2/3 cup milk.

1) First, let's convert 1 2/3 cup into a mixed fraction:
1 2/3 = (1 * 3 + 2) / 3 = 5/3 cup

2) Next, let's multiply 5/3 cup by 3 to find out the amount of milk she will use for 3 times the amount of muffins:
(5/3) * 3 = 15/3 cup

3) Simplifying the fraction 15/3, we get:
15/3 = (15 ÷ 3) / (3 ÷ 3) = 5/1 = 5

Therefore, Vicky will use 5 cups of milk if she wants to make 3 times the amount of muffins.