Problem IV. Firefighters (30 points) John and Maria are the only two residents of Econvil- lage. Both get utility on their private consumption good, c, and the total number of firefighters hired for Econvillage, F = f1 + fm. Specifically, John's utility is uy = 4 In(c)) + In(F) and Maria's utility is un = 4 In(cm) + In(F). So their utilities are identical. Each of them has an income of $90. Price of the consumption good and price/wage of cach firefighter are both equal to $1. 2. What is the socially optimal number of firefighters? Be clear about the social planner's problem setup including the planner's choices, objective function, and the constraint. (7 pts) 3. Compare the social optimum and the private optimum. How and why do they differ? What type of problem exists there? (4 pts) 4. How would the situation change if John and Maria were a family together i.e. they had perfect altruism towards each other? Just explain the intuition. Math is not required here. (5 pts) 5. Now, back to the case with no altruism, suppose that the state government hires 9 fire- fighters for Econvillage at no cost from the village. Now, resolve the private optimum. How does it differ from 1? What is the total number of firefighters, both privately and publicly financed, in Econvillage? What is the name of this phenomenon? (7 pts) Problem IV. Firefighters (30 points) John and Maria are the only two residents of Econvil- lage. Both get utility on their private consumption good, c, and the total number of firefighters hired for Econvillage, F = f1 + fm. Specifically, John's utility is uy = 4 In(c)) + In(F) and Maria's utility is un = 4 In(cm) + In(F). So their utilities are identical. Each of them has an income of $90. Price of the consumption good and price/wage of cach firefighter are both equal to $1. 2. What is the socially optimal number of firefighters? Be clear about the social planner's problem setup including the planner's choices, objective function, and the constraint. (7 pts) 3. Compare the social optimum and the private optimum. How and why do they differ? What type of problem exists there? (4 pts) 4. How would the situation change if John and Maria were a family together i.e. they had perfect altruism towards each other? Just explain the intuition. Math is not required here. (5 pts) 5. Now, back to the case with no altruism, suppose that the state government hires 9 fire- fighters for Econvillage at no cost from the village. Now, resolve the private optimum. How does it differ from 1? What is the total number of firefighters, both privately and publicly financed, in Econvillage? What is the name of this phenomenon? (7 pts)
