An airplane travels 1200 miles in 4 hours with the wind. The same trip takes 5 hours against the wind.What is the speed of the plane in still air and what is the wind speed?Select the correct answer below:Speed in still air: 270 mph; Speed of the wind: 30 mph.Speed in still air: 280 mph; Speed of the wind: 40 mph.Speed in still air: 290 mph; Speed of the wind: 50 mph.Speed in still air: 300 mph; Speed of the wind: 60 mph.