Final answer:
Lebron can find the fastest average speed by choosing the flight with the greatest kilometers per hour and the one with the least minutes per kilometer, ensuring the units are properly converted and the calculations are reasonable.
Step-by-step explanation:
Lebron is looking to compare flights based on their average speed. To find the flight with the fastest average speed, Lebron should:
Option B) Find the greatest kilometers per hour.
Option C) Find the least minutes per kilometer.
Finding the greatest kilometers per hour means looking for the highest rate of speed, which indicates the fastest flight. Conversely, finding the least minutes per kilometer means the flight takes the shortest amount of time to travel one kilometer, which is another indicator of speed. Both options will help Lebron determine which flight is the fastest.
To ensure correctness, Lebron can follow the steps below:
Substitute the given values for distance and time to calculate the average speed.
Convert units if necessary, such as from km/min to km/h by multiplying by the conversion factor 60 min/hr.
Check for proper cancellation of units during conversion.
Finally, evaluate if the calculated average speeds are reasonable for comparison.