Question

Dominique is making a rice dish for 5 people that requires 4 teaspoons of salt. if she were to add just one more teaspoon of salt to the rice after tasting it, half of the time she would be able to notice a difference. if dominique decides to triple her recipe to feed 15 people, which would call for a total of 12 teaspoons of salt, how many teaspoons of salt would need to be added for a person to be able to taste the difference half of the time

Answer 1

The answer is "3".

Dominique is making a rice dish for 5 people that requires 4 teaspoons of salt.

When there are 5 people and 4 teaspoons of salt, 1 teaspoon of salt would need to be added for a person to be able to taste the difference half of the time.

So, when there are 15 people and 12 teaspoons of salt, 3 teaspoon of salt would need to be added for a person to be able to taste the difference half of the time.