An aeroplane covers 25000km, 1200km, 500, at the rate of 500km/h, 400km/h, and 250km/h respectively. Find the average speed for the whole journey
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Answer:
485.4545 km/h
Step-by-step explanation:
T1 = 25000/500 = 50 hrs
T2 = 1200/400 = 3 hrs
T3 = 500/250 = 2 hrs
Average Speed = Total distance / Total time
= (25000+1200+500)/(50+3+2)
= 26700/55
= 485.4545 km/h
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