- A100 s
- B200 s
- C600 s
- D400 s
Step-by-Step Solution
Lap times: s, 100 s and 200 s. 200 s is a whole number of laps for all (3, 2 and 1 laps). Direction does not matter at the start point.
Answer: B) 200 s
On a 400 m track, A and B run the same way at 6 m/s and 4 m/s, while C runs the other way at 2 m/s. All start together from one point. After how long are all three first back at that point together?
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