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A 5 km race is run on a 400 m circular track. A and B run at speeds in the ratio 5 : 4, starting together. How many times does A overtake B before A finishes?

Competition practiceRaces & Circular Tracks
  • A2
  • B3
  • C1
  • D4

Step-by-Step Solution

When A runs 5000 m, B runs 4000 m, so A gains 1000 m. Each overtake needs a full 400 m gain: times.
Answer: A) 2

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