Britney and Paris are neighbors. During the winter, it is impossible for a snowplow to clear the street in front of Britney’s house without clearing the front of Paris’s. Britney’s marginal benefit from snowplowing services is 12 - Z, where Z is the number of times the street is plowed. Paris’s marginal benefit is 8 - 2Z. The marginal cost of getting the street plowed is $ 16. Sketch the two marginal benefit schedules and the aggregate marginal benefit schedule. Draw in the marginal cost schedule, and find the efficient level of provision for snowplowing services
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