This video will tell you the secret to working out average speed on the GRE and GMAT.
Say I drove 20mph on way to work and 30mph on the same route back. What is my average speed? It’s not 25mph!
Part of the secret is to make up a distance! Pick a multiple of both speeds for easier calculation.
Next question: Philip walked at 4mph on his way to work but took a route that was twice as long on way back. If his overall average speed across both journeys was 8mph, what was his speed on the way back?
We will also use the distance speed time triangle again and again!
I offer private GRE / GMAT tutoring online at a fixed rate of $140/hr. Please get in touch via the email below, or through my tutoring website:
Enquiries: philip@gretutorlondon.com If you’re now ready to get into your dream MBA program, my former student, Angel, is offering virtual private Admissions coaching. She was admitted into Harvard Business School, The Wharton School of Business, and Columbia Business School (accepted into every school she interviewed for) after graduating from UCLA with a degree in Communication. She also got 3 perfect scores on the GRE’s Analytical Writing Assessment (99th percentile).
Here is her link – – and you can reach her at angellinzhu@gmail.com with the subject line, “PHILIP SENT ME.”
Amazing how you can hold all those numbers in your head!
Love from Bangladesh ❤❤❤❤
Thanks Philip! For the question given, I assumed the distance to workplace as 4 miles and distance back as 8 miles and had the same answer.
we can also take harmonic mean?
thank you so much!
great explanation and great practice questions !!!
Great stuff. Thank you Philip ❤️
Fantastic….
This trick works, I made up a distance of 24 using the same principle and got the same answer. Thanks Philip
Ohh I already Met this Video's Philip In Another video where Philip Introduced this Philip 😁😅😀🤣😂
You should decrease your tutoring charge and offer coaching service for group of student like gregmat….
Enjoying this!!!
Love it
Thank you man, time is my biggest issue
Wish you all the best Philip. Thank you so much
Thanks boy
Hi, Love your videos. I found a way to do the last question in a faster way. We use the trick that adding both scenarios of time will give you the total time ie t1 + t2 = total time (T)
So the equation becomes :: 1/4 + 2/x = 3/8 (time of first journey = 1/4, time of second journey = 2/x and Total time, T = 3/8). Here we can even use your trick to make up a distance but the ratio would stay the same (1d + 2d = 3d)
Solving this equation will give you x = 16. 🙂
This was so good. Thank you so much!!!
Was 10 hrs in question?
Fantastic!
Please could you use a blackboard.
Great examples
i got it right!!!!!!!!!!
loved the strategy!
amazing!
pls show the calculation, its much easier that way
I can't thank you enough for all these wonderful videos! 🥺💜 My score increased by 7 points!
Thanks brother
558th like
They need to start leaving a love button for videos on you tube because you deserve one
I have referred all your videos on all my GRE watsapp and FB group… I absolutely love ur tricks and tips..
Do you please give visualize explanation.
Best video!!!!!!!!!!
This is indeed phenomenal. Thank you
Phenomenal trick from a phenomenal person..
Phillip can you tell me that relative speed concept in important or not for GRE? Thank you
Since distance is common can't we directly use HM(harmonic mean) that way it's much simpler than this and saves a lot of time if distance is variable aswell we can slightly modify the equation and use right , sir which do u think is ther better method?
Thanks a ton!
Where do you recommend do to questions like this or any quant questions online for practice??
The triangle visual really helped, thanks!
I think i get this. Whenever you're asked for average speed or speed, just know that your answer will be close to the smaller time or speed given in the question…..