Suppose that a city law requires taxi drivers to wear tuxedos. The drivers must pay $10 per week for the tuxedos. Taxicab compabies pay their drivers $210 per week. After paying for the tuxedos, taxi drivers earn $200 per week.

i)If the law were revised so that taxicab companies, not the drivers; must pay for the tuxedos, what would happen to the taxi drivers' earning?

ii)If the law were repealed, what would happen to the taxi drivers' earnings? Be as specific as possible

我觉得是要用需求供给曲线，i)中厂商出钱，需求曲线下移$10，所以新的工资，应该在200-210之间。可是这个时候供给曲线要变吗？

ii)供给曲线下移$10，新的工资在200-210之间

看似简单，但是不知道要考虑哪些细节