CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

At what time will the train reach city A from city B?

I. The train crosses another train of equal length of 300 metres and running in opposite direction in 22.5 seconds.

II. The train leaves city B at 8.15 a.m. for city A situated at a distance of 837 km.

III. The train crosses a lamp post in 15 seconds.


  1. I only

  2. II only

  3. II and Ill only

  4. All I, II and III are required.

  5. III only


Solution

The correct option is C

II and Ill only


III gives, speed = 30015m/s=20m/s=(20×185)km/hr=72km/hr.
II gives, time taken  = (83772)hrs=938hrs=11hrs 37 min 30 secs.
So, the train will reach city A at 7:52:30 p.m.
I gives, relative speed of train  = 60022.5=26.67

Since I is insufficient as speed and direction of another train is not given, thus statement II and III together determines the time.

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
QuestionImage
QuestionImage
View More...


People also searched for
View More...



footer-image