Final Answer:
The student's total utility after purchasing 2 units of pizza and 2 units of pens can be determined by summing the marginal utilities of each good. The total utility will be the sum of the marginal utility of 2 units of pizza and the marginal utility of 2 units of pens.
Step-by-step explanation:
The total utility is calculated by adding the marginal utilities of each consumed unit of goods. If the marginal utility of 2 units of pizza is, for example, 20 and the marginal utility of 2 units of pens is 15, the total utility would be 35 (20 + 15).
It's important to note that marginal utility diminishes as consumption increases, meaning each additional unit contributes less to total utility. This principle is a key aspect of consumer behavior in microeconomics.
Understanding marginal utility and total utility helps in analyzing consumer choices and preferences in allocating resources among different goods.