NavigationQuestion 280 of 934

A pilot flies 210 NM at a groundspeed of 140 knots. How long does the flight take?

  1. 1 hour 15 minutes
  2. 1 hour 45 minutes
  3. 2 hours 10 minutes
  4. 1 hour 30 minutes
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Correct answer: 1 hour 30 minutes

Time equals distance divided by groundspeed. 210 divided by 140 is 1.5 hours.

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