Suppose that a city must replace aging water pipes in the city system that is expected to cost $50 million. The new pipes are expected to last for about 30 years. The city has an annual budget of about $250 million and is trying to decide whether to finance the pipe replacement out of current revenues; through a one- year, temporary tax increase; or by borrowing the money by selling 30-y ear bonds at an interest cost of 5 percent. Outline the advantages and disadvantages of each financing method. Which would you recommend? Might there be any reason to combine the methods?