Problems on Trains - Shortcuts & Tricks for Placement Tests, Job Interviews & Exams
ฝัง
- เผยแพร่เมื่อ 31 พ.ค. 2024
- Crack the quantitative aptitude section of Placement Test or Job Interview at any company with shortcuts & tricks on Problems on Trains. Extremely helpful to crack entrance exams like MBA, Banking - IBPS, SBI, UPSC, SSC, Railways etc.
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#ProblemsOnTrains #QuantitativeAptitude #PlacementTest
0:00 Quantitative Aptitude
10:03 Two trains with lengths 126 m and 119 m respectively are moving towards each other. Their speeds are 12 m/s and 23 m/s, respectively. What will be the time needed by the trains to cross each other?
14:19 A train passes a stationary pole in 8 seconds. The train also passes a 200 m long bridge in 28 seconds. What is the length and the speed of the train?
18:52 A train having length 150 m passes a platform of 550 m length. The time taken for it is 56 seconds. In how much time will this
21:00 Stations Mand N are 276 km apart. At the exact same time, a train starts from M and other from N towards N and M respectively. These trains meet after 12 hours. The train travelling from Mto N is slower by 14 km/hr in comparison to the other train. What is speed of slower train?
24:34 From P and Q, two trains start moving towards each other at the same time. Their speeds are 120 km/hr and 100 km/hr, respectively. When the two trains meet each other, one train has covered 40 km more than other train. Find the distance between P and Q?
28:15 Two trains A and B leave Kolkata for Sikkim at 8:00 pm and 8:30 pm respectively and run at 90 km/hr and 120 km/hr, respectively. At what distance from Kolkata, will the two trains meet?
31:48 A train overtakes two boys who are running at the rate of 8 km/hr and 16 km/hr in the same direction as the train. The train completely passes them in 36 seconds and 40 seconds respectively. What is the length of the train?
37:14 With stoppage, the speed of a train is 36 km/hr. However without stoppage, it is 40 km/hr. Find out for how many minutes does the train stop per hour?
39:33 There are 2 trains P and Q moving in same direction. They are of equal length and cross a stationary pole in 5 seconds and 6 seconds respectively. In how much time would they cross each other?
Practice Questions on "Problems on Trains" available at: www.careerride.com/mcq/problems-on-trains-quantitative-aptitude-mcq-questions-24.aspx
Please cover Race and Game related topics as well.
In the 9th Question length to be crossed by the train must also be only L, Why did we take 2L?
@@dsrarv 2 trains ..so adding both distance ..i.e L+L = 2L
Thank you sir for being a part of my step to Success, I got placed in TCS DIGITAL today !!! Your are one of the reason for that
Congratulations to u! Did u only follow this channel for the apti or u referred books as well?
That's a great news! Congratulations and all the best! Do share the videos with your friends too :)
@@dipali_d4279thank you, First I watched all the videos here, and referred R S AGARWAL book.
@@CareerRideOfficial thank you sir, yes ofcourse sir
What is the name of the book? Plz tell i want to buy
For 5th question: d= s×t
* "t "we can find it from extra distance/ extra speed i.e 40/120-100, 40/20 =2
* relative speed = 100 +120= 220
So, d= 2×220= 440km
Always helpful with the tricks and logic used; easy to understand
For question no.6, we can also solve this way:
In 1 hr train T1=90 km then in half an hour 45km .since 90 km/hr
Now both the train run at 8:30 pm means time same then equating T=D/S,
(x-45)/90 =x/120
x=180km
I didn't understand why in this question they have used (T-0.5). Since it started late it shud be (T+0.5) ryt?
And I find your way of solving this much more easier
@@asadarsh11111 suppose they are meeting at 11 pm then A takes 11-8=3, and B takes 11-8.5=2.5.
❤️
@@tyrotravelog how does that work one train is faster so it will reach earlier.
Why x-45
Sir, I think you should be given award for this selfless service
Wow. This is really helpful. Thankyou for this. Glad to find CareerRide on youtube😀
We respect your efforts. Concepts are explained very clearly.
Sir ur way of teaching is very simple..thank you ....! Im an bank aspirant .for the past two years i ve been trying... Even if iknow the concepts i m solving oly quadratic eqn,simplification and data interpretation in aps ...i get nervous even i know the concept.that is the reason of my failure...im rectifying it.carreerguide videos help me a lot now ..thank you !
Ur solving problems method is very good...I understand easily when this video i see ..thank you sir ur video
Thank you so much sir, you made all questions so easy by saying "how easy it was"
U r best sir.i like your videos,u explain all the topic in proper manner.thank u so much
Ultimate teaching...... No words against this channel... Im really very happy to know the clear concepts about Aptitude problems
Thanks, Sugurayya! Glad to know that you found this video useful. Do share it with your friends as well and stay connected! :)
Very good explanation, you covered all most all types. Thank you so much
thank you for this simple tips
Very good explanation sir, you have covered almost all the topics. It would be helpful for us if you also cover data interpretation topic(bar,pie graphs)
Yes pls
Beautifullly taught❤
Thank you so much for your effort sir...it's very useful sir🌹
What a fantastic video.. After a long time I have seen such video with great concept.. I am used to wify study adda247.. But this video breaks them all... Thank you sir... Keep such more video...
Superb explanation with reasonable logics👌👌
Sir your teachings is awesome but there are some problems among them which we can solve in other methods and in a very short steps and much easy way.
Wishing a very Happy Teacher's Day to the entire careerride team and especially to the person who has given the voiceover for all the careerride videos!!
Thanks for your wishes, Rucha! We appreciate the love our visitors and subscribers are sending across our way. Each one of you is so valuable to us. Your wishes have been communicated to the team and the teachers :)
@@CareerRideOfficial Sir, why D1 and D2 should be added in 4th problem?
thanks for simple tricks
Awesome video ever... Neatly presented. Thank you for such amazing video,..
Sir also can you please teach us the coding problems, it would be beneficial for the placements
Hi
Really..I appreciate your efforts..this video is really very helpful..
Hlo
Thanks a lot sir for explaining this in very easier way.....🙏
clarity explanation..tank you..
Sir your way of explanation is so natural and easy.....
But when any problem other than your questions comes to me I feel nervous and my mind stops working, actually I forget every concept and method and the question becomes harder and harder.
Thanks, Sandeep. The only way to overcome nervousness is practice. Practice the chapter immediately after you have seen the video. Hope this helps :)
Q6 can be done in just 2 lines
Time is constant when 2 objects meet
Let P covers x distance and Q covers x+40 distance
x/100=(x+40)/120
120x = 100x + 4000
20x = 4000
X = 200
Total distance between P and Q = 2x + 40 = 440km
2nd problem was easy to find by deducting 8 sec from 28 and 200/20 =10 m/s then 10*8 =80 m
thank u soooomuch.
we need these type deap questions
Don't u know the spelling of deep
Thankyou for such wonderful explanation.
Thank you for this video and very helpful tp so much 🙏🙏🙏🙏🙋🙋👏👏👏
Excellent sir
I am thinking that why u didn't get more subscribers
U r way of explaining is awesome
Thanks for your great effort sir..hats off
sir i see approx all of video so intersting and very useful for me thanks a lot sir
Thank u..the video is very helpful for me...appreciate u r work..
You're welcome, Kashyap! Stay connected:)
Thank you.
Tysm . Loved that😊
Question no 7 first u consider speed train varying then u use speed of train for both train S how is possible
all explanation and also problem are good bt i have problem in question no 7
if in that we take the speed of first and second person are 4.5 and 5.4 kmph and to overtake them in 8.4 and 8.5 then tell me length of train direction are same
Kindly use blue pen, but ur contents are of different level,keep on going . Wish u success
Plz upload video on pipe questions
Thanks for your help . It's very useful for me
thank you sir
Thank you so much sir...This video was very helpful
You're welcome, Aayush! Stay connected :)
Best playlist I have found on TH-cam
Thank you sir so nice of you sir🤗🤗
Such a nice explanation sir thank you
27:16 In question no. 5
We have assumed that the time is 2 hours(because that is when the difference of distance is 40 km)
BUT
if we assume the time to be 4 hours then the difference of distance will also be 40km. And considering 4 hours time gives a different answer than considering 2 hours time. The explanation seems false.
The right explanation is ⬇️
Two trains have started at the same time so when the meet each-other their traveling time will also be same.
Time of Train A = Time of Train B.
From here it's just a simple case of DST.
(P.s:- This quantitative aptitude playlist is awesome. Thanks a lot)
Thank you
for question number 6, I think time taken by train B is (T+0.5)
No, the train leaves half an hour late that's why we subtract 0.5
@@aayushithakur3881 i didnt understand pls solve it here.i got 1 hr30min so confusing
@@aayushithakur3881 If the original time for the train to reach is T, and the second train is half an hour late, it should be T+0.5, because it is reaching late!! isn't' it?
This guy is insane❤🎀
very good explanation sir. Thanks a lot.
I understand this topic very well
sir in 5th question we can do as we know time is same quantity for both so we equalize time T1=d/100 T2=d+40/120 6d=5d+200 d=200, d+40=240 , total 200+240=440
In question 6 we can do let the time be t so our second time be t-1/2 distance be d t=d/90 , t-1/2=d/120 as we know t=d/90 our equation will be d/120-d/90=1/2 on solving we get d=180
A big thanks to you sir.
I always come up to this channel for any of my doubts.. Thank you so much for being such a helping hand..😊
I dare whoever is reading this to take a shot everytime sir says "nothing but"😂. No offense to him
his methods are so simple and great I wish he was my 10th std math teacher
Very nice video and channel
Thank you so much sir .
thanx for the video
Thank you sir video was so helpful❤
Thanks sir
Really helpful. Thanks
Very helpful 🙏
30:36 In question 6, shouldn't train B take half an hour more than train A since it started late?
So the correct equation should be:
90 x T = 120 x ( T + 0.5 )
arent I right?
excellent explanation! just keep doing the same.
Thaks, Abhijeet! Stay connected :)
36.54 you take equation 1 to reduce time it's easy to solve than equation 2
5th question can be solved in this way also
From P a train speed is
120km/hr it means for 1hr it travels 120km &
for 2 hrs=240km similarly
From Q .1hr =100km 2hrs =200
In the question given as 1 train travels 40km distance more
See those distance travelled by the trains 240 and 200
We got 40km more distance from the train which is starting from P
Condition satisfied.
Count the total distance travelled by the two trains 240+200=440
Answer pls!!??
A passenger train departs from delhi at 6pm for mumbai. At 9pm an express train, whose avg speed exceeds that of passenger train by 15km/h leaves mumbai for delhi. Two trains meet each other mid-route. At what time do they meet , given that distance b/w the cities is 1080km?
Excellent bhayya
Thanks a lot sir 🙏 I already solved most of the problems by watching only 15 minutes of this video 😊
Really superb 👍
u say in most of the problem train start at same time ... If not then what need to do...explain please. AND if in Q4 extra distance is not 40 km then what to do..?
great thanks>>>
very helpful session.. I could able to solve many questions. Thanku for ur efforts... Keep coming with such videos.. 😇
Thanks, Vaishali. Do share the videos with your friends and family & join us in our mission to make good content available easily. Stay connected :)
Excellent sir
Good teaching sir but please start with easy sums and then move to complex ones.
For Question no.6:
The train that leaves at 8:00 am would be (90*45/60)=45km ahead of the other train when it starts. Also, the relative speed being 30 km/hr , the distance from Kolkata would be (45/30)*120=180km.
how 45 ?
Sir pls make video on races
In Q6 in respect of train A time is 2hours and with respect to train B the time is 1 hour and 30 min to meet each other
Very helpful 💯👍👍
Thank you so much
Best Playlist for quant
Sir throughout used X there r shortcuts tricks pls explain adjacent those shortcut tricks and also display ans option
for Q3 train speed is missing and is has to be constant for all the object so if i plug in lengths of train and platform and divide by time i will get the speed.
S = D/T
= 150+550/ 56
S = 12.5
Now i can put this for 250+150/12.5 = 32
i found this easy instead of figure cross division.. ppl who struggle what just happen😅😅😅
Sir , here u have taught that attracts means in opp. Direction which mean + and same means same direction which mean -(minus).
But we have also learnt downstream (same direction) means add and upstream ( opp.direction) which mean subtracting.
Could u clear this doubt please.
Opposite means + and same --
Boat agar downstream or neeche jayega toh boat ki speed badhegi aur boat ki speed jyada hogi isliye "+" hota hai aur upstream or upar jab koi boat jata hai tab uski speed kam ho jati hai isliye "-" hoga
Thank you Sir
Sir, upload videos on dice 🎲 and cubes
In the question of Kolkata and Sikkim, I assume that, instead of subtracting the time we must add the time (0.5)
Thought so
Me too have the same doubt
same doubt T2 will take 30 min more than t1
Best explanation till now
You teach so good
Thanks your the best
You are so grear sir...
I didn't understand when two train moving same direction then the distance will be not L + L , they will more then 2L as they are travelling smae time in the one direction so also covering some distance, what about that distance .. please tell me this one any one .. please.
For 6th and 9th I have a short cut to calculate that is for 6th two speeds 90 and 120 360 is the common point soo 360/2 is 180 that is the answer and for 9th 5sec n 6sec common point is 30 soo as it is time 30*2 is 60 that is the answer is it applicable for every prblm That them sir
Shortcut vagera kahin you tube channel py milngy kya
Y is it that u are dividing 2 in the 6th ques and multiplying by 2 in the 9th ques?
Need more videos of u sir it's a request
How to get more problems on trains?
Thank you ♥️
Sir question 5 can also solve
Let's us take x+40 for t1
X for t2
S1=120
S2=100 ila cheyocha
hat is 14 km hr faster not 40