A train of 150 m length crosses a milestone in 10 seconds. Another train with the same speed crosses the milestone in 12 seconds. What is the length of the second train ?
180 m
120 m
200 m
100 m
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CISF-AC-EXE – 2022
For the first train:
Length (L1) = 150 m
Time taken (t1) = 10 seconds
Speed (S) = Distance / Time = L1 / t1 = 150 m / 10 s = 15 m/s.
The second train has the same speed (S = 15 m/s).
Time taken by the second train (t2) = 12 seconds.
Length of the second train (L2) = Speed × Time = S × t2 = 15 m/s × 12 s = 180 m.
– Distance covered by a train crossing a milestone is its own length.
– Both trains have the same speed.