If the marginal utilities of the first 4 candy bars consumed are 10, 12, 9, and 7, respectively, the total utility derived from consuming 3 candy bars is
A) 3
B) 9
C) 25
D) 31
E) Total utility cannot be derived from marginal utility. On the other hand, marginal utility can be derived from total utility.

Question

Quizplus · Accepted Answer

Total utility is the sum of marginal utilities up to that point. So, the total utility from consuming 3 candy bars is 10 + 12 + 9 = 31.

If the Marginal Utilities of the First 4 Candy Bars