A man in a train notices that he can count 41 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed is the train travelling?
A) 60 km/hr B) 100 km/hr C) 110 km/hr D) 120 km/hr
Answers
Answered by
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Option D
Explanation:
Number of gaps between 41 poles = 40
So total distance between 41 poles = 40*50
= 2000 meter = 2 km
In 1 minute train is moving 2 km/minute.
Speed in hour = 2*60 = 120 km/hour
Answered by
0
Answer:
D) 120 km/hr
Step-by-step explanation:
41 telephone posts, each 50 m apart
The distance between 41 telephone posts: 40 * 50 m= 2000 m
2000 m/min= 2 km per 1/60 hr= 120 km/hr
Option D) 120 km/hr
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