In a flight of 600 km, an aircraft was slowed down due to bad weather

• Time Distance

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:

1. 1 hour
2. 2 hours
3. 3 hours
4. 4 hours

Answer

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.