Time, Speed and Distance Unplugged  
For an MBA aspirant, a
problem on time, speed and distance means solving complex situations with the
help of many equations. Whether you are a CAT 2010 or 2011 aspirant, time speed
and distance will give you many sleepless nights. The chapter has both easy and
tough aspects to it. The easy aspect is the formula; there is only one formula
Distance = speed x time and it is known to
every student. The tough aspect of course is the application of the formula;
most students apply equations to solve the problems based on this formula.
Let's have a look at a typical time, speed and distance problem:
Two trains start from stations A and B, respectively,
towards each other at 12:00 noon. The trains take 7 hours and 13
hours, respectively, to cover the whole trip. What time do the two trains meet? Well how would you solve it? If you already started writing an equation, hold your pen for a while. There's a better method. The method owes its existence to fundamentals of ratios and proportions. Let's have a look at the formula once again: I conclude this chapter over here itself with only one
thought for you all to ponder I did not use equations in a single question. In
the next chapter I'll cover relative speed and circular motion. Till then, chew
the cud over these problems. Total Gadha I shall have to end here and leave the rest of it for my CBT Club students. I shall cover some problems based on this in the CBT Club this week. You might also like: Use of Arithmetic and Harmonic Progressions in Time, Speed, and Distance Time, Speed, Distance and Work Solved Problems Relative Speed, Clocks and Circular Motion 
Re: Time, Speed and Distance Unplugged  
That article was realy great. Thanks for putting up the great show. TG, Let me know if I can be any help in getting the things going for upcoming CAT. 
Re: Time, Speed and Distance Unplugged  
tis was very useful...all concepts given in sequence.... waiting for your relative speed and circular motion lecture....thanks 
Re: Time, Speed and Distance Unplugged  
Hi Roger, Let me write an article on circular motion soon. Total Gadha 
Re: Time, Speed and Distance Unplugged  
Hi Nitya, I hope that the article was useful to you. Total Gadha 
Re: Time, Speed and Distance Unplugged  
Got it TG Sir. Obviously the ratios of their velocities have to be same. Why am I so dumb... Thanks.
Regards Temperamental 
Re: Time, Speed and Distance Unplugged  
Thanks a lot Chinni! Criticism is the best attitude you can ask from anyone esp when you are preparing for cat. thank you, Nitya. 
Re: Time, Speed and Distance Unplugged  
yes it is correct and thank you for your help......... 
Re: Time, Speed and Distance Unplugged  
Hi Kiran, What if Nitya is operating in base 9? The addition might be correct.. Total Gadha 
Re: Time, Speed and Distance Unplugged  
TG!!! Pleaszzzzzzzzzzzzzzzzzzzzzzzz 
Re: Time, Speed and Distance Unplugged  
What if Nitya is operating in base 9? The addition might be correct.. >>>>>>

Re: Time, Speed and Distance Unplugged  
Chinni!!!!!! 
Re: Time, Speed and Distance Unplugged  
10x TG and Chinni 
Re: Time, Speed and Distance Unplugged  
hmm..THAT post made my day! And let's get you your dream this time. 
Re: Time, Speed and Distance Unplugged  
Waiting for the next next chapter relative speed and circular motion.... Pls consider at the earliest.. 
Re: Time, Speed and Distance Unplugged  
Thank u very much sir .... 
Re: Time, Speed and Distance Unplugged  
Hi TG, this is an amazing concept, can you please share the concept of all the major chapters of cat exam.. 
Re: Time, Speed and Distance Unplugged  
Hi Brijesh, Will do Total Gadha 
Re: Time, Speed and Distance Unplugged  
How can we apply TG sir,s Time constant theorm here to solve the Q?? TG sir pls explain... Waiting for Circular motion chapter.. 
Re: Time, Speed and Distance Unplugged  
Hi Kunal, Which question? I think I have already solved that question in one of these posts. And yes, I remember the circular motion lesson 
Re: Time, Speed and Distance Unplugged  
Hi TG Sir , Thanks a lot . regards Suman Chandra

Re: Time, Speed and Distance Unplugged  
hello sir , I m vinay , I found the topic useful .Would you please extend the topic into circular tracks too. 
Re: Time, Speed and Distance Unplugged  
hey tg... I m still awaiting the circular motion lession 
Re: Time, Speed and Distance Unplugged  
Hi Monica, Check the main page. The circular motion chapter is already there. Total Gadha 
Re: Time, Speed and Distance Unplugged  
Thanks TJ... 
Re: Time, Speed and Distance Unplugged  
hi tg, can u provide the word document of this article, as i m not able to take the proper print of the same 
Re: Time, Speed and Distance Unplugged  
Examples are very helpful and demonstrated clearly.I am kind enough if you provide more such tipe examples 
Re: Time, Speed and Distance Unplugged  
I couldnt get this questn's solutn...plz explain further.. 
Re: Time, Speed and Distance Unplugged  
Great!! article, really helpful..........hats off!! 
Re: Time, Speed and Distance Unplugged  
Aditi, These are two different questions on the same set. Answers to both of them are correct. Total Gadha 
Re: Time, Speed and Distance Unplugged  
HI TG Sir, The content was awesome. Please do post similar enlightening stuff on circular races and the swimming pool laps coincidences of two swimmers. 
Re: Time, Speed and Distance Unplugged  
Hello Sir This is my 1st post.Pardon me if I am being foolish.But I am not able to find out the links to geometry,tsd,number system quizzes. Please help.. 
Re: Time, Speed and Distance Unplugged  
hii tg sir... thankuu so much sir... bt there r two questions involving ram and shyam and the answers to both the questions are differnt...plss clear... 
Re: Time, Speed and Distance Unplugged  
Thanks a lot for this article has broaden my thinking, really. 
Re: Question  
dear tg sir, i have a doubt...in the problem ram and shyam..Shyam started 45 min after Ram..with both having diff. speed..how shyam travel the same distance as ram in (t45) min...? 
Re: Time, Speed and Distance Unplugged  
one of the very fine articles sir, 
Re: Time, Speed and Distance Unplugged  
Thank you sooooooo much sir... Pls keep posting sir..

Re: Time, Speed and Distance Unplugged  
hi tg the way you have explained this concept is awesome. thanx a lot 
Re: Time, Speed and Distance Unplugged  
Awesome article!!! Nice work TG... 
Re: Time, Speed and Distance Unplugged  
thanks Bdy !! but dont u think that its quite lengthy. Do you have any shortcut? 
Re: Time, Speed and Distance Unplugged  
hehe gr8 yaar thts very true.. !! 
Re: Time, Speed and Distance Unplugged  
hey kanika is the answer 0.5 kmph 
Re: Time, Speed and Distance Unplugged  
nop 
Re: Time, Speed and Distance Unplugged  
ans is 1km/hr, kanika can u tell me source 4m where u get all these problems or send all ur problems on my emailayashgupta@gmail.com, i will be thankful 2 u ,waiting 4 ur positive response 
Re: Time, Speed and Distance Unplugged  
is the ans of this quet. is right or wrong 
Re: Time, Speed and Distance Unplugged  
let total distance be D speed of cork=speed of canal=v speed of swimmer=u then 30/60+ {D/(u+v)} = 1/v(i) and D=1+(uv)/2(ii) put value of D in (i) we get u(v1)=0 so v=1 I hope i am correct...... 
Re: Time, Speed and Distance Unplugged  
Thank you sir... it was a great help... questions given covered d entire topic, it was worth goinf thru d lesson 
Re: Time, Speed and Distance Unplugged  
answer is 4.28km/h.. 
Re: Time, Speed and Distance Unplugged  
would u explain this ques properly to me 
Re: Time, Speed and Distance Unplugged  
the question @ da start is same as '2 man do a work separately in 7 and 13 days respectively.whn will dey finish if dey do it together' (1/7 +1/13 = 1/t i.e. t = 13*7/13+7).. thnx TG for dis epic gem of an article 
Re: Time, Speed and Distance Unplugged  
since the flat plane is ame in both the journey(to and from the office).so some more distance is traveled uphill (as the difference in time). so that distance (D) travelled more uphill. can be calculated : D/40D/60= 1/6(10 m in hrs)  (i) D=20km x/40 + y/48 + x+D/60 = 3  (2) total distance =128 +20=148 
Re: Time, Speed and Distance Unplugged  
Ajay left X for Y at 9 :00 am . Bala left Y for X also at 9 :00 am . After their meeting at a point on the way , Ajay took 16 minutes to reach Y and ..Bala took 9 minutes to reach X . Find their meeting time ? 
Re: Time, Speed and Distance Unplugged  
Hi Tarun Just draw the situation and get the required time. They met after (16*9)^{1/2} = 12 minutes after 9:00am. Kamal Lohia^{ } 
Re: Time, Speed and Distance Unplugged  
Can you please explain how you arrived at (16*9)^(.5)? Edit: Oh, I just figured it out. No worries. 