Holly5611 Holly5611

19-01-2018
Mathematics

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An airplane flies 80 km in 10 minutes and then flies 100 km in 20 minutes what is the average speed

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gustanika gustanika

19-01-2018

the average speed = (speed 1 + speed 2)/2
the average speed = (80/10 + 100/20)/2
the average speed = (8 + 5)/2
the average speed = 13/2
the average speed = 6.5 km/minute

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