A 350 m long train passes over a 250 m long bridge at a speed of 54 km/h. How long will it take to cross the bridge?
1) 1/90 hr
2) 2/3 hr
3)2/3sec
4) 40 minutes
Answers
Answered by
1
Answer:
u r wrong
Explanation:
Train's length=350m=0.35km. Bridge's length=250m=0.25km. Total distance to be covered by the train=0 35+0.25km=0.6km. Time it will take to do so=distance/speed=0.6/54=0.01 hr.
Answered by
0
Answer:
the correct answer is 1/90 hr option no. A
Explanation:
speed = distance / time
54×1000/60×60
⇒15=600t⇒t=60015⇒t=40sec⇒t=4060×60hr⇒t=190hr
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