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HKIMO 2026 Grade 8 National Preliminary Set 03 Question 5

HKIMO · HKIMO 2026 Grade 8 National Preliminary Set 03

Question 5

A train travels at 40 km/h and a car at 60 km/h in the same direction. The car takes 90 seconds to pass the train completely. Find the train length in metres.

Editorial convention: neglect the car length and treat it as a moving point.
  1. 1000 m
  2. 2500 m
  3. 500 m
  4. 1100 m