It is currently 17 Feb 2018, 19:25

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

How much time did it take a certain car to travel 400

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Veritas Prep GMAT Instructor
User avatar
G
Joined: 16 Oct 2010
Posts: 7934
Location: Pune, India
Re: How much time did it take a certain car to travel 400 [#permalink]

Show Tags

New post 31 Jan 2017, 08:46
malavika1 wrote:
Had a question. Should the question not have mentioned that the car is not travelling at a constant speed?

The reason is that if the car is travelling at a constant speed, then even (1) is sufficient to arrive at the answer.

Or on GMAT, are we just supposed to assume that unless otherwise mentioned, we cannot assume constant speed.


We cannot assume constant speed unless otherwise mentioned. The car's average speed while covering the first 200 km could be different from its average speed while covering the second half of the distance.
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Get started with Veritas Prep GMAT On Demand for $199

Veritas Prep Reviews

Senior Manager
Senior Manager
User avatar
S
Joined: 08 Dec 2015
Posts: 315
GMAT 1: 600 Q44 V27
Reviews Badge
How much time did it take a certain car to travel 400 [#permalink]

Show Tags

New post 08 Feb 2017, 10:21
Guys... the quadratic and all that is very cool but how can you do it in 2 minutes?

Another question, Bunuel plugs in s=400/t

This may be a very stupid question, but I am a bit green at maths. We already used the equation 400=st at the beginning.
Can we "reuse" the equation again to plug something in the expression that is an outcome of plugging in the 400=st? My fear is that we will be using information that is already inseted in the equation we are solving, since we plugged the 400=st at the start. So can we end up with some loop that we can't get out from?

|Do i make myself clear?..

Thank you!
How much time did it take a certain car to travel 400   [#permalink] 08 Feb 2017, 10:21

Go to page   Previous    1   2   [ 22 posts ] 

Display posts from previous: Sort by

How much time did it take a certain car to travel 400

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.