Vishwanath
Monday, February 18, 2013
54.. |
A train moves past a telegraph post and a bridge 264 m long in 8 seconds and 20 seconds respectively. What is the speed of the train? |
A. | 69.5 km/hr | B. | 70 km/hr | C. | 79 km/hr | D. | 79.2 km/hr |
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Answer: Option D
Explanation:
Let the length of the train be x metres and its speed by y m/sec.
8y + 264 = 20y
y = 22.
Speed = 22 m/sec = |
| 22 x | 18 |
| km/hr = 79.2 km/hr. |
5
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Title : Trains Q54
Description : 54.. A train moves past a telegraph post and a bridge 264 m long in 8 seconds and 20 seconds respectively. What is the speed of the train? A...
Rating : 5
