If you hold at 120 knots for 60 minutes, distance?

• A. 60 NM
• B. 90 NM
• C. 180 NM
• D. 120 NM

Answer: (D)

Distance equals speed times time, with knots meaning nautical miles per hour. If you fly at 120 knots for 60 minutes, that’s 1 hour, so the distance is 120 × 1 = 120 nautical miles. The other numbers would come from different times (e.g., half an hour at 120 knots is 60 NM; three quarters of an hour is 90 NM; one and a half hours is 180 NM), but with 60 minutes on the clock, 120 NM is the result.