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An airplane flies at a groundspeed of 90 knots for 2 hours 20 minutes. About how far does it go?

  1. 180 NM
  2. 195 NM
  3. 225 NM
  4. 210 NM
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Correct answer: 210 NM

Distance is groundspeed times time. Ninety knots times 2.33 hours is 210 NM.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 16: Navigation — Basic Calculations, page 398

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Questions last reviewed: 18 October 2026