In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is:
Let the duration of flight be x hours.
Original Speed - New Speed = Reduced Speed
600/x - 600/(x + 1/2) = 200
600/x - 400/x = 200
x = 1
The correct option is A.