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If 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 original duration of the flight is:
1. 1 hour
2. 2 hours
3. 3 hours
4. 4 hours
If 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 original duration of the flight is:
1. 1 hour
2. 2 hours
3. 3 hours
4. 4 hours
Correct option is 1. 1 hour
Speed equation
\(\frac{600}{t}-\frac{600}{t+\frac12}= 400\)
By hit and trial method
T = 1 hour