If a plane travels at an average speed of 180 knots over a distance of 600 nautical miles, how long will the flight take?

To determine the time it takes for a plane to travel a certain distance at a specific speed, the formula to use is:

Time = Distance ÷ Speed

In this scenario, the plane travels a distance of 600 nautical miles at an average speed of 180 knots.

By applying the formula:

Time = 600 nautical miles ÷ 180 knots

Performing the division gives:

Time = 3.33 hours

This value can also be expressed as 3 hours and 20 minutes, approximating to about 3.33 hours in decimal form. However, it seems that the answer provided does not match the calculated time. If "4 hr" was chosen, it would not accurately reflect the correct calculation based on the given speed and distance.

Thus, 3 hours and 20 minutes is closer to the answer than any of the other options, but the precise duration must be recognized. This suggests a deeper examination of time calculations and conversions.