If you are cruising at 110 knots true airspeed and want to travel 220 nautical miles, how long will it take?

• A. 2.0 hours
• B. 1.5 hours
• C. 0.5 hours
• D. 3.0 hours

Answer: (A)

Time equals distance divided by speed. At 110 knots, you cover 110 nautical miles each hour. To travel 220 nautical miles, the time needed is 220 ÷ 110 = 2 hours. Since knots are nautical miles per hour and the distance is in nautical miles, the units line up and you get hours as the result. So the travel time is 2 hours. If you look at the other options, they would require you to match a different distance for the same speed (for example, 1.5 hours would be 165 nautical miles, 0.5 hours would be 55 nautical miles, and 3 hours would be 330 nautical miles).