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Wolg: work it Out

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Public Goods: Work It Out $1$

Suppose there are five people who use a dirt road to go to and from their individual homes. Assume no one owns the road and that it works best when only three cars use it$.$ Each person incurs a different marginal benefit but the same marginal cost of $$1$ to drive on the road.

The marginal benefits for each person are given in the accompanying table:

$\backslash$table$[[$Driver$,$Marginal Benefit $($$$),$Marginal Cost $($$$)],[$Ed$,25,1],[$Cathy$,20,1],[$Aviva$,15,1],[$John$,10,1],[$Sue$,5,1]]$

a$.$ Under these circumstances, how many people will use the road?

$1$ person will use the road.

$2$ people will use the road.