Final answer:
Morgan can walk 20 kilometers in 4 hours by maintaining the same walking rate of 5,000 meters per hour. The conversion from meters to kilometers is necessary to solve the problem. The correct option is B.20 km.
Step-by-step explanation:
The student's question relates to calculating the total distance Morgan can walk in 4 hours, given that she can walk 5,000 meters in one hour. To determine the total distance Morgan can walk in kilometers, we need to first understand the conversion between meters and kilometers and then apply this to the distance walked each hour multiplied by the total number of hours.
First, we convert 5,000 meters to kilometers by dividing by 1,000, since there are 1,000 meters in one kilometer:
- 5,000 meters / 1,000 = 5 kilometers
Next, we multiply the distance Morgan walks in one hour by the total number of hours she walks:
- 5 kilometers x 4 hours = 20 kilometers
Therefore, Morgan can walk 20 kilometers in 4 hours if she maintains the same walking rate.