tayjohnson0042 tayjohnson0042

25-09-2018
Mathematics

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Determine how long it will take an airplane to travel 2000 miles if it flies 200 miles per hour, 400 miles per hour, and 600 miles per hour.

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Аноним Аноним

27-09-2018

I will use 'hr' to mean hour and 'hrs' to mean hours.

The airplane flies:

200 miles per hr

400 miles per hr

600 miles per hr

Average speed = Total distance ÷ total time

= (200 + 400 + 600)miles ÷ 3hrs = 400miles/hr

Time = Distance ÷ Average speed

= 2000miles ÷ 400miles/hr = 5hrs

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