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It is 4,281 kilometers from Seattle to Hawaii. An airliner makes this journey in 4.5 hours. What was the plane’s average speed?

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Speed = Distance/Time
Distance= 4,281 kilometers
Time = 4.5 hours
Substituting into the first equation:

Speed = 4281/4.5
Speed = 951.333 km/h

Another way of looking at the same question.

Distance (km) 4281 x
------ = ------
Time (h) 4.5 1

Here, we need to solve for x. How much distance can we fly in 1 hour.

Multiplying both sides by 4.5, we get 4281 = 4.5x

To isolate 1x, we must divide both sides by 4.5

x= 4281/4.5

Good luck,

Paul

Posted on Dec 08, 2017

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Speed= distance/time
speed=4281/4.5 km/h
speed=951.34 kmph
hence, the plane fly at 951.34 kmph

Posted on Nov 27, 2017

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