in a flight of 600km, a aircraft was slowed down due to bad weather.Its average speed for the trip was reduced by 200km/hr and the time of the flight increased by 30min. Find the duration of flight

in a flight of 600km, a aircraft was slowed down due to bad weather.It

1.	in a flight of 600km, a aircraft was slowed down due to bad weather.Its average speed for the trip was reduced by 200km/hr and the time of the flight increased by 30min. Find the duration of flight
Answer» Let the average speed of the aircraft = U km/h speed=distance/time time=distance/speed time=distance/u 600/u-200=600/u+1/2 (30min=1/2h) 600/u-200=1200+u/2u by cross multiplication 1200u=1200u+u2-240000-200u 0=u2-200u-240000 0=u2-600u+400u-240000 u(u-600)+400(u-600) (u+400)(u-600) THEREFORE u=600 or -400 since speed cant be in negative u=600km/h time=distance/speed =600/600 =1HOUR so the duration of the FLIGHT in average speed is 1hour but when the speed was reduced the duration was increased by 30min therefore the speed of flight when reduced the duration will be 1hour 30min

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in a flight of 600km, a aircraft was slowed down due to bad weather.Its average speed for the trip was reduced by 200km/hr and the time of the flight increased by 30min. Find the duration of flight

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