To the right is a table giving the classes Marginal Utility for statues honoring the Intro Micro Economics Professor. We also show Pat's MU separately.

   Because the size of the group enjoying the public good is so large, Pat's MU makes very little difference in the total. Suppose the Marginal Cost of a statue is 6,250. As long as no fractional statues can be built the optimal amount is 4, with or without Pat.

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# of Statues Pat's MU Sum of Others MU's Total MU
1 10 8,000 8,010
2 8 7,500 7,508
3 7 7,000 7,007
4 6 6,500 6,506
5 5 6,000 6,005
6 4 5,500 5,504
7 3 5,000 5,003