Jack receives 30 utils from one apple, 45 utils from two apples, and 55 utils from three apples. It follows that the marginal utility of the third apple is __________ utils and that Jack's __________utility rises as his __________ declines.
A)55; marginal; total
B)10; total; marginal
C)130; total; marginal
D)100; marginal; total

Question

Jack receives 30 utils from one apple, 45 utils from two apples, and 55 utils from three apples. It follows that the marginal utility of the third apple is __________ utils and that Jack's __________utility rises as his __________ declines.
A)55; marginal;  total
B)10; total; marginal
C)130; total; marginal
D)100; marginal; total

Quizplus · Accepted Answer

The marginal utility of the third apple is the additional utility gained from consuming the third apple, which is 55 utils (total utility from three apples) minus 45 utils (total utility from two apples), equaling 10 utils. Jack's total utility rises as his marginal utility declines.

Jack Receives 30 Utils from One Apple, 45 Utils from Two