I'm in middle in this please help?

Ramankholi

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Joined
Nov 5, 2020
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9
If the speed of an airplane is decreased by 60 km/hr, it takes 24 minutes more to travel same distance and if speed is increased by 40km/hr, it takes 12 minutes less to travel the same distance. what is the average speed of the airplane in km/hr?
 
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