Tough and Tricky questions: Properties of Sets.
By what percent did the median annual cost of health insurance in City X increase from 1990 to 2000?
(1) In 1990, the median annual cost of health insurance in City X was \frac{2}{3} of the median annual cost of health insurance in City Y.
(2) In 2000, the median annual cost of health insurance in City X was \frac{6}{7} of the median annual cost of health insurance in City Y.
Kudos for a correct solution.