Answer:
- It took him 3 minutes to get to Lexington.
Explanation:
Using equations, let's solve. In the problem, it said that he ran at 200 meters per minute.
- 200 meters = 1 minute
- => 400 meters = 2 minute
Then, it said that "After 400m, he is tired and immediately slows to a rate of 100 meters per minute."
- => 100 meters = 1 minute
- 400 meters + 100 meters = 2 minute + 1 minute
- => 500 meters = 3 minutes
Hence, it took him 3 minutes to get to Lexington.
Hoped this helped.