Correct Answer:
C. 11 km
Explanation:
The correct answer is 11 km because we can find the distance by matching the time units to the speed format.
- Step 1 (Convert Minutes to Hours): Since the speed is in kilometers per hour, convert 12 minutes into hours by dividing by 60:
$$text{Time} = frac{12}{60} = frac{1}{5}text{ of an hour (or 0.2 hours)}$$ - Step 2 (Calculate Distance): Multiply speed by time to find the total distance traveled:
$$text{Distance} = 55 times frac{1}{5} = 11text{ km}$$ - Incorrect Options:
- 9 km, 10 km, and 12 km are incorrect values that do not match our distance equation.