Multiple Choice Questions on In a flight of 600 km an aircraft was slowed down due to bad weather Its average speed for the........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

In a flight of 600 km an aircraft was slowed down due to bad weather Its average speed for the...........

Quantitative Aptitude ( CCS) Time & distance
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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

    Correct Answer

    2 hours

    Incorrect Answer

    3 hours

    Incorrect Answer

    4 hours

    Incorrect Answer
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    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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