If a 450 meter long railway runs at a speed of 90 km/h through a tunnel, it crosses the tunnel in 1 minute 12 seconds, then what is the length of that tunnel?

If a 450 meter long railway runs at a speed of 90 km/h through a tunne

1.	If a 450 meter long railway runs at a speed of 90 km/h through a tunnel, it crosses the tunnel in 1 minute 12 seconds, then what is the length of that tunnel?
A.	1000 m.
B.	1350 m.
C.	360 m.
D.	750 m.
Answer» C. 360 m.

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If a 450 meter long railway runs at a speed of 90 km/h through a tunnel, it crosses the tunnel in 1 minute 12 seconds, then what is the length of that tunnel?

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