I am preparing for CAT 2020. This is my 120th lecture of 192. Commenting so that I see it the future and praise Ravi Sir.
@vins6863 жыл бұрын
Here after CAT 2020!
@amankumar-gv7yx3 жыл бұрын
@@vins686 how much did you score?
@vins6863 жыл бұрын
@@amankumar-gv7yx 87 percentile 😔
@kishankumaragarwal77683 жыл бұрын
@@vins686 giving cat again?
@vins6863 жыл бұрын
@@kishankumaragarwal7768 obviously yes!!
@nileshpatel81335 жыл бұрын
The Mathis of teaching is the best.My daughter is preparing for Campos placement. She goes in coaching classes for stranthning apptitude. she told me her dought. So I advised her to see CAT APPTITUDE by RODHA.After a day she told me that going in coaching classes is simply wastage of time,money& energy.you are simply better than the best.
@bibhutikumarsingh98995 жыл бұрын
Same Here I too Wasted my 50k for CAT preparation. Ravi sir is a great teacher.
@abhishekmahur26624 жыл бұрын
@@bibhutikumarsingh9899 Me too ;C
@sheetaljain42883 жыл бұрын
I too wasted but not in offline coaching, I wasted my amount in gradeup subscription. While taking gradeup classes I found that teacher, in online classroom program at gradeup (now Byju's) , runs behind syllabus and doesn't take good questions to make your concepts clear. I highly suggest not to take any online as well as offline classroom program. Ravi Sir's video are enough for every competitive exam.
@Randomworldindia3 жыл бұрын
@@sheetaljain4288 unacademy is amazing for CAT ravi sir and other teachers are just beyond the words
@miteshshinde13662 жыл бұрын
a simple way to solve is distance is constant i.e. 45 km so ratio of minimum time to maximize time will be ratio of minimum speed to maximize speed (30+45)/(90+45)
@pothurumeghana3509 Жыл бұрын
How will it be the ratio of speed min to speed max? As speed is inversely proportional to time we have to calculate ratio of speed max to speed min which would be wrong
@arunadityarajjain11294 жыл бұрын
Ravi travelled from Bangalore to Pondicherry? Was it a personal experience, Sir? :p
@sumitbhagat3779 Жыл бұрын
😂
@sumitbhagat3779 Жыл бұрын
Nice interpretation 😊
@sanjaic74605 ай бұрын
I'm watching this video in 2024 and I'm going to appear for CAT 2024 and i thank you sir for your teaching and hopefully i learn from your videos to get a good percentile in CAT with all my efforts and will be graceful for your efforts in making those videos.
@Tushar_goswami_005 ай бұрын
self or coaching?
@sanjaic74605 ай бұрын
@@Tushar_goswami_00 self
@subhammajumdar22143 жыл бұрын
Sir, the first question's answer should be 5:9 I suppose. Because it's 20:36. But you as usual taught like a champ
@abeginnerspov59683 жыл бұрын
yep, mistake, but its okay. we understood the concept
@o_StormYT8 ай бұрын
shouldn't be the ratio of 72:36 as 2:1 because question says consecutive buses
@SushilKumar-gy9tf5 ай бұрын
@@o_StormYTno bcz, 2 sets of consecutive which are minimum and maximum is asked.
@YineeTV2 жыл бұрын
This questions even more simple when you use Distance is constant concept That is Between two buses distance is same So distance is constant between two meetings (Remember relative distance) So time is inversely proportional to speed So ratio of time = ratio of inversely of speeds Time minimum when speed maximum and vice versa So T min / T max = S min / S max = 30+45 / 90+45 = 5 : 9 This is the answer (simple na) Remmner to check When car speed is 30 the meetings occur atleast twice or not Since they first meet at 3:10 so next meeting will be before 5 pm So there must be atleast 2 meeting So above answer is correct
@YineeTV2 жыл бұрын
I am not insulting sir Even I learned this trick from ravi sir I think he missed the trick here Great teacher you are Thank you very much sir
@googleretriever8983 Жыл бұрын
m surprised by this fact thank u so much for such an easy explanation rodha 2.0 lol
@selinakaushik10963 ай бұрын
but since speed is inversely proportional to time, the answer would come out like speed max/speed min = time min/time max ie (45+90)/(45+30) that comes out to be 9:5 which is not correct since the answer is 5:9
@rajashreesaha439 Жыл бұрын
Took an hour to understand this ,just because Ravi sir said it’s important 💯✨
@---gl9xv4 жыл бұрын
Direct soln, time is inversely proportional to speed, highest RS = 135, lowes RS = 75, 1/135:1/75 = 5:9
@thegreat6724 жыл бұрын
Is it realiable ? And also u have to do the whole process for the second part 🙄🤔
@aesthelon Жыл бұрын
ravi went from peace to rage mode
@jaichachlani38792 жыл бұрын
Lovely question, lovely explanation! Thank you so much for province us quality content!🙏
@aishwaryar9296 Жыл бұрын
Amazing explanation. One of the best teacher ever.
@mbagirl032 ай бұрын
It's my 2nd time to watch all rodha's playlist...
@saiyashwanth1113 жыл бұрын
Brilliant question to clear all conceptual doubts🙏
@rahulshrivastava87204 жыл бұрын
Best question to understand TSD
@prashiqАй бұрын
i am glad i took my time to solve this one.. did a calculation mistake but logic was correct..
@gautamgautamkrishna3 жыл бұрын
This is like the 'Bug' episode of BrBa
@varunrajpurohit98662 жыл бұрын
Is it good to prepare for cat from class 11 and how should one start
@sagarchauhan012 жыл бұрын
last bus is at 8 pm , and when ravi at 9pm then how he meet any other bus on the way?
@himanshujaryal71933 ай бұрын
Yes last meeting 9:20 pr hogi so 13 buses actually
@mahimaahi6522Ай бұрын
it took me some time, but an excellent one
@aditigoyal9289 Жыл бұрын
sir maximum time interval should be 1 hr 12 min that car took for the 1st meeting, then why did you take 36 min as maximum time interval?
@gsan2049 Жыл бұрын
In the qs it was asked time interval between two consecutive meetings.since there is no meeting at 2pm .It is not considered as per the qs.Hope it is helpful
@kritikasingh79924 жыл бұрын
Last bus at 8pm , there is no need to calculate further sir
@abhinavjain87704 жыл бұрын
exactly
@arunadityarajjain11294 жыл бұрын
@@abhinavjain8770 Last bus is at 8 pm but the car will not meet that last last bus at 8 pm, so there is a need.
@satyasandeep55033 жыл бұрын
Those are the timings at which car and corresponding buses (1 to 15 ) have met. The last bus that started at 8 PM met the car at 10 PM.
@kritikasingh79923 жыл бұрын
@@satyasandeep5503 got it thanx
@Mechanical_engineer433 ай бұрын
5:9 is the correct ratio for 1st question
@kshitijshekhar6624 жыл бұрын
If we only had to find the number of busses crosses, could we do it with the concept of avg. speed for Ravi's car? As the busses are moving at a constant speed
@7856abc10 ай бұрын
2:4:3ans of second questionof 1....
@shubhammishra-xz6ib3 жыл бұрын
Bus are leaving every hour not after crossing Davis car. So @3:12 second bus should have moved some distance
@ShubhamSingh-hs2cc2 жыл бұрын
good point bro
@sreejeshsharmas3 ай бұрын
But still the distance between 2 consecutive buses will be 45km only as speed is const and they leave every hour,right?
@saimathar0072 жыл бұрын
Sir 1st bus and 13 bus meeting consecutive kaise hogi ye nhi smjh aya.
@surajalwayslight5707 Жыл бұрын
Sir after 8pm how can he meet bus
@bitanroy46023 жыл бұрын
1st question was such amazing
@Eth_com2 жыл бұрын
Beautifully explained sir ❤❤🙏🙏🙏🙏🙏🙏🙏🙏🙏
@udaybhaskar66678 ай бұрын
i will leave this question if i got in exam
@arpanpradhan1872 ай бұрын
What's the point of consecutive here?
@devanshgupta678711 ай бұрын
Insane question
@paramkude5222 Жыл бұрын
Sir, Isnt the first time interval 72 mins?
@sanskritigoel8777 Жыл бұрын
exactly my doubt
@Bhavesh_jattan2 жыл бұрын
Sir I was also able to do it mentally because of how well you taught this concept but my question is how are we supposed to read such a long question calculate all this and answer in 1.5 mins in CAT
@swatibisht45722 жыл бұрын
Better to leave it for last. If you get extra time then only go for it.
@mkhanna44344 жыл бұрын
I am cannot able to understand ,the how to equating time of 2pm (car) and bus(6am)..how we equate time ..as 2pm..please sir,help ..me sir
@deepakagrawal2244 жыл бұрын
6am to 6pm = 12hr , 6pm-4hr =2pm so 12-4 = 8hr
@shriyanshtiwari26103 жыл бұрын
you can try using 24hrs time method rather than 12 hours like instead os using 2pm use it as 14:00 and 6pm as 18:00 by this way u can take out the time difference easily. hope it helps :)
@Ankit-lf9xm Жыл бұрын
the first question should be in DI
@badbot18103 ай бұрын
super question
@lifestyle_vlogs5 Жыл бұрын
Very good question with good concept ❤️
@ishaanrohmetra3447 Жыл бұрын
In this playlist, time and work speed time distances, trains and boats and streams are fully covered?
@madnessofmunna Жыл бұрын
le Newton at 5:00:01 pm ;"abe saale "
@abeginnerspov59683 жыл бұрын
at 1.5x speed, sir was rapping
@sheetaljain42883 жыл бұрын
I watched at 2x still found comfortable.
@SiddharthKumarJhaJIST3 ай бұрын
Putting a comment here so later next year I come back and reply that I converted IIM
@SARAVANAKUMAR-v1v3 ай бұрын
Sure u will!
@kushagra43794 жыл бұрын
The first question has asked for the ratio between any 2 consecutive meetings. But sir has taken 36 min and 20min which are not consecutive. Tell me if I'm wrong here.
@swapneelrao82764 жыл бұрын
Read the question once again. where do you see the maximum time interval in the meetings? in the beginning right. So answer is 36. Then where do you see the minimum time interval, in the end. So the answer is 20 minutes. Then you take the ratio to get the final answer.
@kushagra43794 жыл бұрын
@@swapneelrao8276 are you telling me that the word consecutive has no significance here?
@swapneelrao82764 жыл бұрын
@@kushagra4379 it definitely has bro. 20 min and 36min is difference between consecutive meetings only. That is what he has considered.
@anmolratan52174 жыл бұрын
@@swapneelrao8276 i think the answer should be 30:20 , because of the word consecutive one option is 36:30 , 2nd is 30:20 , 2nd one has more time difference. if it was not consecutive then it would be 36:20. Correct me if I am wrong. Pay attention on the word consecutive .
@DhanushAdns4 жыл бұрын
The question is to find the ratio of min and max POSSIBLE TIME INTERVAL between any 2 CONSECUTIVE meetings. The time diff between first and second( or 3rd and 4rth) meeting is 36 mins(which is the maximum). And the time diff between 13rth and 14rth ( or 14rth and 15th) is 20 mins(which is the minimum). Thus 20:36
@aayushi78744 жыл бұрын
Sir ans will be 20/30 =2/3 because the 2 meetings have to be consecutive.
@manoj47302 жыл бұрын
Yes sir good question
@caffeineandCozy6 ай бұрын
sir the ratio is 5:9 not 4:9
@HumanoidRobo5 жыл бұрын
Sir the maximum time is 72 mins so the ratio to min : max = 12:72 = 1:6
@sujiths44094 жыл бұрын
not time, it is time interval.
@bijoylove1234 жыл бұрын
Sir its time "interval"...so v need to check the maximum and minimum interval of time taken for these two objects to meet...
@ishajain58283 жыл бұрын
Thank you so much Sir ❤🤘
@sanjanasood2383 жыл бұрын
The last bus from pondicherry is at 8:00PM so total should be 4 +11 buses. Can someone clear it
@anonymity_01 Жыл бұрын
4+7 i guess
@danceworld15 Жыл бұрын
6Am to 8Pm , we have to include both as well so difference+1 👍
@deepakgulia38634 жыл бұрын
At 12 :48 in the forth bus but he maintenance 30kmpl for first 3 hrs and at 5 :00am it is 4 bus at a interval of 1 hr so logically it's speed increase after 4:24 or the third bus pls clr my doubt sir
@mrinfinity5214 жыл бұрын
at 5pm his speed increases to 45kmpl which results in the increase of relative speed, hence decreasing time interval
@crypticguy623 Жыл бұрын
5:9 is answer
@abeginnerspov59683 жыл бұрын
1st qs, 5:9
@bhumikasoneji6352 Жыл бұрын
11:24 after 2pm … ravi at around 3pm cover 30km so the distance between ravi. Bus at 3pm should be 90-30=60km ….. any one agree ?
@krishchowdhary3 жыл бұрын
sir the answer is probably wrong because you forgot to take into account the condition that "the last bus was at 8pm".
@Rodha3 жыл бұрын
Took that into account :)
@jayagupta82203 жыл бұрын
The timings that we are calculating are the ones at which the car will meet the bus, not the time when bus leaves So it's correct
@subhammajumdar22143 жыл бұрын
watch carefully
@sagarchauhan012 жыл бұрын
yes right! what answer you are getting?
@7856abc10 ай бұрын
Sir in 3rd case why u r taking till 10 pm, in question it is upto 11 pm then number of buses will change and ratio become different in 2 nd question
@roshanbarnwal5763 Жыл бұрын
Sir the answer for the first part will be 5:18
@meetparmar23633 жыл бұрын
Super❤️❤️❤️❤️❤️❤️
@viratkohli72103 жыл бұрын
I guess they will ist meet ar 320hrs
@xszdfrwadqf65612 жыл бұрын
cet puzzle level question
@Scenary072 ай бұрын
This qn feels like a dilr set 😅
@Heisennburg4 жыл бұрын
Dont worry agli video me phir se hai
@Abhijeetkr_22115 жыл бұрын
Sir, i can't understand how after 1st meeting the distance is same 45m?
@anjaliwani17995 жыл бұрын
speed of each bus is 45km/hr and each bus starts after 1 hr .. so distance = 45km/hr *1hr= 45km