-Sam's total utility for bananas is in the table above.Sam's marginal utility from the fourth banana is
A) 100
B) 25
C) 20
D) 15
E) cannot be determined from the given information.

Question

-Sam's total utility for bananas is in the table above.Sam's marginal utility from the fourth banana is
A) 100 
B) 25 
C) 20 
D) 15 
E) cannot be determined from the given information.

Quizplus · Accepted Answer

Marginal utility is the change in total utility from consuming one more unit. If the total utility from the third banana is 60 and from the fourth banana is 80, the marginal utility from the fourth banana is 80 - 60 = 20.

-Sam's Total Utility for Bananas Is in the Table Above