एक ट्रेन , जिसकी गति 67.5 km/hr है , 9 सेकंड में एक खंभा और 29 सेकंड में एक प्लेटफार्म पार करती है । प्लेटफार्म की लंबाई कितनी है ?
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Answer:
13.5 km.
Step-by-step explanation:
time taken for crossing the pole = 9 sec
time taken for crossing the platform = 29 sec
speed of train 67.5 km/hr
or 67.5*1000/3600
675 MTR / sec.
means train can travel 675 mtr in 1 sec.
so 675*9 sec= 6075 mtr (Train Lenght)
similarly
675*29=19575 (train+plateform)
प्लेटफॉर्म की लंबाई
= 19,575-6,075 mtr
= 13500 mtr
= 13.5 km.
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