CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Tags:

Articles

Discussions
Submit Discussion
kirti

· started a discussion

· 1 Months ago

wrong answers (Question: 100208.1 )

answer of some of the questions is wrong. Plz correct them

Question:

DIRECTIONS: In each of the following questions, a question is followed by information given in three statements. You have to study the question along with the statements and decide, the information given in which of the statement (s) is necessary to answer the question?


What is the speed of the train?


I.  Train crosses a pole in 5 seconds.

II.  Length of the train is 120 meters.

III. Train crosses a platform  in 10 seconds


Options:
A) Only I and II.
B) Only II and III
C) All I, II and III
D) Any two of the three 
E) II and either I or III
Solution:

When a train crosses a pole, then

Speed of train = (Length of train)/(time  taken ) 

When a train crosses a platform, then speed of train

= (Length of platform +Length of train )/(Time taken)

Clearly, statement II and  I  required to determine the speed of train. 


S Chhotray

· commented

· 1 Months ago

@Knowledge Expert - But where is Length of the platform given? How can you calculate using II and III? Your solution does not match with what is given in the question

Knowledge Expert

· commented

· 1 Months ago

its correct...

When a train crosses a pole, then
Speed of train = (Length of train)/(time taken )
When a train crosses a platform, then speed of train
= (Length of platform +Length of train )/(Time taken)
Clearly, statement II and either I or III are required to determine the speed of train.
-logo
We at aim to provide most comprehensive content & test for practice which is carefully divided into various chapters and topics to help you focus on your weak areas.Our Practice mock test gives you unmatched analytics to help you realize your strong areas,time management and improvement areas.Our Short & Crisp notes on each topic will help you to quickly revise the topic along with the tips & tricks of the exams.
More About
-Info
-Info

Mobile App

Get it on Google Play
About Us Campus Ambassador Careers Contact Us Refund Policy

All Rights Reserved Top Rankers

User Policy
Disclaimer
Terms & Conditions