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HKIMO 2026 Grade 8 National Preliminary Set 01 Question 5

HKIMO · HKIMO 2026 Grade 8 National Preliminary Set 01

Question 5

A train travels at 50 km/h. A car travels in the same direction at 80 km/h and takes 45 seconds to pass the train completely. Find the train length in metres.

Editorial convention: neglect the car’s length and treat it as a moving point.
  1. 135 m
  2. 125 m
  3. 450 m
  4. 375 m