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:

[A].	1 hour
[B].	2 hours
[C].	3 hours
[D].	4 hours

Answer: Option A

Explanation:

Let the duration of the flight be x hours.

Then,	600	-	600	= 200
	x		x + (1/2)

	600	-	1200	= 200
	x		2x + 1

x(2x + 1) = 3

2x² + x - 3 = 0

(2x + 3)(x - 1) = 0

x = 1 hr. [neglecting the -ve value of x]

Aptitude :: Time and Distance : More Exercises

Time and Distance - General Questions

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:

Aptitude :: Time and Distance : More Exercises

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