GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 15 Jul 2018, 12:03

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

A man in a car observes that he can count 41 electric poles

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

Hide Tags

2 KUDOS received
Senior RC Moderator
User avatar
P
Status: It always seems impossible until it's done!!
Joined: 29 Aug 2012
Posts: 1174
Location: India
WE: General Management (Aerospace and Defense)
GMAT ToolKit User Premium Member Reviews Badge CAT Tests
A man in a car observes that he can count 41 electric poles [#permalink]

Show Tags

New post 19 Aug 2015, 02:37
2
2
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

58% (01:16) correct 42% (01:39) wrong based on 193 sessions

HideShow timer Statistics

A man in a car observes that he can count 41 electric poles in 2 minutes. If each consecutive electric pole is known to be 50 meter apart, what is the speed of the car?

(A) 61 km/h

(B) 60 km/h

(C) 61.5 km/h

(D) 60.5 km/h

(E) 82 km/h

Source : Aristotle Prep

_________________

Become a GMAT Club Premium member to avail lot of discounts

1 KUDOS received
Manager
Manager
User avatar
Joined: 26 Nov 2014
Posts: 98
Reviews Badge
Re: A man in a car observes that he can count 41 electric poles [#permalink]

Show Tags

New post 04 Sep 2015, 05:21
1
A man in a car observes that he can count 41 electric poles in 2 minutes. If each consecutive electric pole is known to be 50 meter apart, what is the speed of the car?


Distance between each pole = 50metres

41 poles are P_P_P....P = 40 intervals

Total distance = 50*40 = 2000metres = 2kms

Time = 2 mins = \(\frac{1}{30}\) hour

Speed = \(\frac{Distance}{Time}\) = \(\frac{2}{(1/30)}\) = 60Kmph
_________________

Consider Kudos for my post, if it is helpful.
TIA

Manager
Manager
avatar
Joined: 07 Apr 2015
Posts: 177
Re: A man in a car observes that he can count 41 electric poles [#permalink]

Show Tags

New post 05 Sep 2015, 05:15
Thats just plain annoying... 41 Poles means 41 intervals to me. As it seems it does not to Aristotle Prep...
Expert Post
2 KUDOS received
EMPOWERgmat Instructor
User avatar
V
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 11957
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: 340 Q170 V170
A man in a car observes that he can count 41 electric poles [#permalink]

Show Tags

New post 05 Sep 2015, 16:38
2
Hi All,

This is meant to be an example of a 'fence post' problem, but the prompt is poorly-worded. Although the prompt does not state it, we're meant to assume that the car STARTS at the first pole, then drives forward at a constant speed, passing each of the remaining 40 poles. In that way, it's traveling 40(50) = 2,000 meters in 2 minutes.

2,000m/2 mins =
1,000m/1 min =
1km/1 min =
60km/1 hour

Final Answer:

While there's a decent chance that you will see this concept one time on the Official GMAT, that question will be far more clearly-worded than this prompt.

GMAT assassins aren't born, they're made,
Rich
_________________

760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/

***********************Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!***********************

Senior Manager
Senior Manager
avatar
G
Status: Countdown Begins...
Joined: 03 Jul 2016
Posts: 311
Location: India
Concentration: Technology, Strategy
Schools: IIMB
GMAT 1: 580 Q48 V22
GPA: 3.7
WE: Information Technology (Consulting)
GMAT ToolKit User Reviews Badge
A man in a car observes that he can count 41 electric poles [#permalink]

Show Tags

New post Updated on: 28 Nov 2016, 11:32
1
41 poles implies 40 distinct points after first pole which are 50 meters apart. So total distance 50*40 = 2000 meters for 2 minutes.
For 1 minute = 1000 meters = 1km
For 1 hour = 60Km.

Originally posted by RMD007 on 28 Nov 2016, 11:06.
Last edited by RMD007 on 28 Nov 2016, 11:32, edited 1 time in total.
Manager
Manager
avatar
B
Joined: 03 Oct 2013
Posts: 84
Re: A man in a car observes that he can count 41 electric poles [#permalink]

Show Tags

New post 28 Nov 2016, 11:14
2 poles => 50m...3 poles=> 100m..i.e. n poles => 50 (n-1) m

Therefore total distance = 2000m = 2km

Time = 2 minutes

Speed = 2km/2min = 1km/min=> 60km/hour = 60kmph
_________________

P.S. Don't forget to give Kudos on the left if you like the solution

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 7241
Premium Member
Re: A man in a car observes that he can count 41 electric poles [#permalink]

Show Tags

New post 25 Dec 2017, 13:09
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Re: A man in a car observes that he can count 41 electric poles   [#permalink] 25 Dec 2017, 13:09
Display posts from previous: Sort by

A man in a car observes that he can count 41 electric poles

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

Events & Promotions

PREV
NEXT


cron

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| 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®.