A train 900 m long is running at a speed of 78 km/hr. If it crosses a tunnel in 1 min, then the length of the tunnel is ?
Answers
Answered by
0
Answer:
the tunnel will be 2.2km long.
Answered by
1
Answer:
400m
Explanation:
(Train length + Length of the Tunnel) / Speed of the train = Time
Train Length = 900m
Length of the tunnel = X
Speed of the Train = 78 * 5/18 = 21 2/3 m/s (5/18 - conversion factor to m/s from km/hr)
Substitute values into the Equation:
(900 + X) / 21 2/3 = 60
900 + X = 60 * 21 2/3
900 + X = 1300
X = 1300 - 900
X = 400m
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