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An airplane travels 80 km in 10 minutes and then flies 100km in 20 minutes the average speed of the plane is?

80 km in 10 minutes = 8 km/min

100km in 20 minutes = 5 km/min

Average speed = total distance traveled ÷ total time

Average speed = 180 km ÷ 30 min = 6 km/minute

Notice the average speed is closer to 5 km/min, because the plane spends twice as much time traveling at the slower speed.

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15y ago

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