Final answer:
To determine how many teaspoons of salt should be used when 1 cup of basil is used, we can set up a proportion using the ratio provided in the recipe. We can then solve for the unknown variable to find the equivalent amount of salt needed.
Step-by-step explanation:
To determine how many teaspoons of salt should be used when 1 cup of basil is used, we need to use the ratio provided in the recipe. The ratio is 3/4 cups of basil for each 1/8 teaspoon of salt. This means that for every 3/4 cups of basil, we need 1/8 teaspoon of salt. If we have 1 cup of basil, we can set up a proportion to find the equivalent amount of salt:
3/4 cups of basil x teaspoons of salt
1/8 teaspoon of salt 1 cup of basil
To solve this proportion, we can cross-multiply and then solve for x:
3/4x = 1/8
x = (1/8)/(3/4)
x = (1/8)*(4/3)
x = 1/6
Therefore, when 1 cup of basil is used, 1/6 teaspoon of salt should be used.