Laura's total utility from consuming 8, 9, and 10 bonbons is 35, 42, and 45, respectively. Her marginal utility from the 9^th bonbon is A)42. B)77. C)7. D)4.67.

Question

Quizplus · Accepted Answer

Marginal Utility (MU) is the additional utility gained from consuming an additional unit of a good. 
To calculate the marginal utility of the 9th bonbon, we need to subtract the total utility of the 8th bonbon from the total utility of the 9th bonbon:
MU9 = TU9 - TU8
MU9 = 42 - 35
MU9 = 7. 
Therefore, the marginal utility of the 9th bonbon is 7.

As for the best choice(s), it would depend on Laura's budget and the price of each bonbon. If the price of each bonbon is less than or equal to the marginal utility, then it would be rational for Laura to consume another bonbon. If the price is more than the marginal utility, she should not consume another bonbon. Without information on the price or budget, we cannot determine the best choice(s).

Laura's Total Utility from Consuming 8, 9, and 10 Bonbons