Bertha has a cake recipe that requires four cups of flour, four eggs, one cup of sugar, three cups of milk and one teaspoon of vanilla. Bertha discovers that she has only three eggs. If she decides to adjust the recipe accordingly, how much mill will she need? How do I figure this?

Since she only has 3 eggs and needs 4, then you need to take 3/4 of the other ingredients too.

To figure out how much milk Bertha will need if she has only three eggs instead of four, we can use the concept of proportionality.

Let's break down the original recipe and calculate the proportionality factor:

- Original recipe: 4 cups of flour, 4 eggs, 1 cup of sugar, 3 cups of milk, and 1 teaspoon of vanilla.
- Proportionality factor: Since the number of eggs is changing, we need to find the factor by which all the other ingredients can be adjusted. This factor is determined by the relationship between the original and adjusted number of eggs. In this case, the factor is 3/4, because Bertha has three eggs out of the original four.

Now, to find the adjusted amount of milk, we multiply the original amount of milk (3 cups) by the proportionality factor (3/4):

Adjusted amount of milk = 3 cups * (3/4) = 9/4 cups = 2.25 cups

Therefore, Bertha will need 2.25 cups of milk to adjust the recipe when she only has three eggs instead of four.

To determine this, you need to understand the original recipe and the proportionality factor based on the change in the number of eggs. From there, you can use simple multiplication to find the adjusted amount of milk needed.