What will be the Length of Train? If
A 270 metres long train running at the speed of 120 km/hr crosses another train running in the opposite direction at the speed of 80 km/hr in 9 seconds. What is the length of the other train?
- 240 metres
- 320 metres
- 260 metres
- 230 metres
Answer: (4) 230 m
Explanation:-
Let be the length of the other train = X m
The speed of the train = 120 km/hr
Speed in m/sec = 120 x 5/18
= 100/3 m / sec
The length of the train = 270 m
The speed of other train = 80 kn/hr
Speed in m/sec = 80 x 5/18
= 200/9 m/sec
According to the question,
(270 + X)/(100/3 + 200/9) = 9
(270 + X) x 9 /500 = 9
270 + X = 9 x 500/9
270 + X = 500
X = 500 – 270
X = 230 m
Hence, the answer is (4) 230 m.
