A train long is running at a speed of . How much time will it take to pass completely through a tunnel that is long?
- A45 seconds
- B120 seconds
- C100 seconds
- D60 seconds
Solution & Step-by-step Explanation
1. Convert the length of the tunnel into metres: .
2. Total distance to pass through the tunnel = Length of train Length of tunnel:
3. Convert speed from to :
4. Calculate the time taken:
2. Total distance to pass through the tunnel = Length of train Length of tunnel:
3. Convert speed from to :
4. Calculate the time taken: