A fighter plane traveling at u km/hr wants to refuel itself in mid-air. It sights a refueling station coming towards it with a speed of v km/hr. The angle of elevation from the refueling station and the shortest distance between them are 30° and 220Km respectively. The plane sends a signal for refueling to the refueling station. It receives a confirmation in 10 minutes. During this time, the angle of elevation changes to 60°. If the vertical distance between them remains the same throughout and u:v=10:1, find the speed of the refueling station.