Time & distance

Quantitative Aptitude (CHSL) SSC CHSL

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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 hour

2 hours

3 hours

4 hours

Explanation:

Let the duration of the flight be x hours.

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

Now the Quadratic Equation will be formed.

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

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

By: Deepak Dawra

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