- A20 km/h
- B54 km/h
- C72 km/h
- D45 km/h
Step-by-Step Solution
Distance = m in 60 m/ km/h. (45 km/h ignores the train' length; 20 is m/)
Answer: C) 72 km/h
The train in the figure takes exactly 1 minute to pass completely through the tunnel. What is its speed?
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