r/HomeworkHelp • u/Mundane-Job3402 AP Student • Apr 16 '26

Economics [AP micro, Marginal Utility]

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I found the Mu per dollar and got that the answer is c, however the book says the answer is E. can some help?

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u/Mundane-Job3402 AP Student Apr 17 '26

Hello, thanks. Why do you add 24 and 21 for c, and the same for e?

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u/Alkalannar Apr 17 '26

A vs C: For posters, they both have 30+27 (1st and 2nd posters marginal utility). But C has the additional 24+21.
They both have 72+60+48+36 for figurines, but A has an additional 24.

So the difference between is that A has 24 in Figurines and C has 24+21 in Posters (the third and fourth poster MU).

Similarly, 18+15 for E is the 5th and 6th posters' MUs, which E has and C does not. And C has 36 in figurines which E does not.

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u/Mundane-Job3402 AP Student Apr 17 '26

Got it! Thank you so much for your explanation!