- A62.5 s
- B50 s
- C60 s
- D40 s
Step-by-Step Solution
B covers 1600 m while A covers 2000 m, so B's speed m/s. A: 250 s; B: s. Margin 62.5 s.
Answer: A) 62.5 s
In a 2 km race on a 400 m circular track, A finishes just as B completes 4 laps. A runs at 8 m/s. By how many seconds does A beat B?
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