1.

In a flight of 600 km, the speed of the aircraft was slowed down due tobad weather. The average speed of the trip was decreased by 200 km/hrand thus the time of flight increased by 30 minutes. Find the averagespeed of the aircraft originally.​

Answer»

Answer:

1 hr

Step-by-step explanation:

LET the duration of the FLIGHT be X hours.

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.



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