Answer:
C) 8 units of utility.
Explanation:
- Marginal utility refers to the change in the total utility that is achieved from the consumption of one more unit of good.
- It is calculated by getting the change in total utility and dividing it by the change in the number of units consumed.
In this case;
First yields = 18 units
Second yields = 18 + 12 units = 30 Units
Third yields = 38 units
Therefore;
Marginal unit = 38 units - 30 units
= 8 units
Therefore, marginal utility is 8 units of utility.