Answer: The duck can fly 9 kilometers in 6 minutes.
Step-by-step explanation: The rate at which the duck is flying can be calculated as:
Rate = Distance / Time
So, for the initial scenario, where the duck flies 27 kilometers in 18 minutes:
Rate = 27 kilometers / 18 minutes = 1.5 kilometers per minute
Now, we can use this rate to calculate the distance the duck can fly in 6 minutes:
Distance = Rate × Time
Distance = 1.5 kilometers per minute × 6 minutes = 9 kilometers