Flying against the wind, an airplane travels 5820 kilometers in 6 hours. Flying with the wind, the same plane travels 3910 kilometers in 7 hours. What is the rate of the plane in still air and what is the rate of the wind?

Barrett is comparing the membership fees for two museums. the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?