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

1.	In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip wasreduced by 200 km/hr and due to that the time of flight increased by 30 minutes. What is the duration oforiginal flight?(A) 1 hour(B) 1.5 hours(C) 2 hours(D) of the above
Answer» The duration of the flight is 1 hour Let the duration of the flight bexhours. Then,600/x-600/x+ (1/2)= 200 600/x-1200/2x+ 1= 200 x(2x+ 1) = 3 2x²+x- 3 = 0 (2x+ 3)(x- 1) = 0 x= 1 hr. option A is the correct answer option'A'is the right answer

In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip wasreduced by 200 km/hr and due to that the time of flight increased by 30 minutes. What is the duration oforiginal flight?(A) 1 hour(B) 1.5 hours(C) 2 hours(D) of the above

Answer»

The duration of the flight is 1 hour

Let the duration of the flight bexhours.

Then,600/x-600/x+ (1/2)= 200 600/x-1200/2x+ 1= 200 x(2x+ 1) = 3 2x²+x- 3 = 0 (2x+ 3)(x- 1) = 0 x= 1 hr.

option A is the correct answer

option'A'is the right answer