The amount of milk that should be used to make 1/8 of the recipe is 1/20 and this can be determined by using the unitary method.
Given :
The recipe calls for 2/5 cups of milk.
The following steps can be used in order to determine the amount of milk that should be used to make 1/8 of the recipe:
Step 1 - The unitary method can be used in order to determine the amount of milk that should be used to make 1/8 of the recipe.
Step 2 - According to the given data, one recipe required 2/5 cups of milk.
Step 3 - The amount of milk required by 1/8 recipe is:
[tex]=\dfrac{\dfrac{2}{5}}{1}\times \dfrac{1}{8}[/tex]
Step 4 - Simplify the above expression.
[tex]=\dfrac{1}{20}[/tex]
So, the amount of milk that should be used to make 1/8 of the recipe is 1/20.
For more information, refer to the link given below:
https://brainly.com/question/16807456