A train speeding at 120 km/hr crosses an electriv pole in 9 seconds and a platform in 24 seconds. What is the length of the platform ?
Answers
Answered by
2
Answer:
Speed of train = 120km/hr
Time taken to cross the electric pole = 9 sec
Therefore, length of the train
Let the length of the platform be x m.
Then a distance of (x + 300) m is to be covered in 24 seconds at a speed of 100/3 m/s.
Therefore
=> x + 300 = 800
=> x = 500 m.
Answered by
2
Answer:
Step-by-step explanation:
Speed of train =120km/hr=120×
18 /5 m/s=
3 /100 m/s
Time taken to cross the electric pole = 9 sec
∴ Length of the train =( 3 /100 ×9)m=300m
Let the length of the platform be x m.
Then a distance of (x + 300) m is to be covered in 24 seconds at speed of
3 /100 m/s
∴(x+300)=( 3 /100 ×24)m
⇒x+300=800
⇒x=500m
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