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

It is currently 15 Oct 2018, 22:55

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

Many small roads do not have painted markings along their edges. Clear

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

Hide Tags

Manager
Manager
avatar
Joined: 07 Feb 2010
Posts: 130
Many small roads do not have painted markings along their edges. Clear  [#permalink]

Show Tags

New post Updated on: 03 Oct 2018, 23:49
3
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

85% (00:51) correct 15% (01:11) wrong based on 132 sessions

HideShow timer Statistics

Many small roads do not have painted markings along their edges. Clear edge markings would make it easier for drivers to see upcoming curves and to judge the car's position on the road, particularly when visibility is poor, and would therefore seem to be a useful contribution to road safety. However, after Greatwater County painted edge markings on all its narrow, winding roads the annual accident rate along these roads actually increased slightly.

Which of the following if true, most helps to explain the increase in accident rate?


A. Greatwater County has an unusually high proportion of narrow, winding roads.

B. In bad weather it can be nearly as difficult for drivers to see the road as it is at night.

C. Prior to the painting of edge markings, Greatwater County's narrow, winding roads already had a somewhat higher accident rate than other Greatwater County roads.

D. Many of the accidents on narrow, winding roads involve a single vehicle veering off the road, rather than the collision of two vehicles.

E. After the markings were painted on the roads, many drivers who had gone out of their way to avoid driving on those roads at night no longer did so


Attachment:
Untitled.pdf [55.58 KiB]
Downloaded 529 times
To download please login or register as a user


Originally posted by anilnandyala on 16 Nov 2010, 01:49.
Last edited by Bunuel on 03 Oct 2018, 23:49, edited 1 time in total.
Renamed the topic and edited the question.
Most Helpful Expert Reply
Veritas Prep GMAT Instructor
User avatar
P
Joined: 16 Oct 2010
Posts: 8374
Location: Pune, India
Re: Many small roads do not have painted markings along their edges. Clear  [#permalink]

Show Tags

New post 16 Nov 2010, 06:32
8
Stimulus:

Clear markings on narrow road are expected to make driving safer particularly when visibility is poor.
When Greatwater County painted edges of narrow roads, the accident rate on those roads increased slightly.

This is what we call 'Explain the Paradox' question. You were expecting the accident rate to go down but it actually went up! We have to look for the option that will help explain this paradox.
1. That might explain why its accident rate is higher than that of other counties. It doesn't explain why its accident rate is higher than its own previous accident rate. It had the same narrow winding roads before, it has the same roads now.
2. In bad weather, it can be nearly as hard to see the road as at night. But the case was the same before the roads were painted. After the roads were painted, it should have been easier for the drivers to drive at night and also in bad weather. The accident rate should have dropped then. It doesn't explain why it increased after the roads were painted. (If the option had an additional statement saying 'There have been unusually high number of bad weather days recently (after the paint job)' or something like it, we might have given it more thought.
3. The comparison is not between accident rate of narrow roads and other roads but between the accident rate of narrow roads before the paint job and narrow roads after the paint job.
4. Again, doesn't explain the difference in accident rate before the paint job and after the paint job.
5. After the markings, drivers felt safer and drove on those roads at night too. If before the markings, let's say the accident rate was 2% and 100 people used to drive at night on those roads in a month, after the markings, the accident rate might have fallen to 1%, but 500 people started driving at night on those roads in a month. So there would be 5 accidents as compared to 2 of before. Therefore, we might have seen an increase in the accident rate. This explains the paradox.
(I just assumed the numbers I took above to give clarity)
_________________

Karishma
Veritas Prep GMAT Instructor

Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options >

GMAT self-study has never been more personalized or more fun. Try ORION Free!

General Discussion
Intern
Intern
avatar
Joined: 26 Mar 2010
Posts: 34
Re: Many small roads do not have painted markings along their edges. Clear  [#permalink]

Show Tags

New post 16 Nov 2010, 05:46
1
It was anticipated that the paint along the edge of the road would make it easier for people to notice a curve coming ahead. However, after the paint along the edge of the road was applied, even more accidents occurred than before. Thus the answer must explain the contradiction.

E explains this contradiction in the expectation. Because of the winding roads, some people avoided driving when there was low visibility. However, after the paint was applied along the edge of the road, more people began driving on these windy roads even though visibility was low. As a result, more drivers on the road can help to explain the increase in the accident rate.
Senior Manager
Senior Manager
avatar
Joined: 24 Mar 2011
Posts: 372
Location: Texas
Re: Many small roads do not have painted markings along their  [#permalink]

Show Tags

New post 06 Jul 2011, 12:14
3
1
Baten80 wrote:
Many small roads do not have painted markings along their edges. Clear edge markings would make it easier for drivers to see upcoming curves and to judge the car's position on the road, particularly when visibility is poor, and would therefore seem to be a useful contribution to road safety. However, after Greatwater County painted edge markings on all its narrow, winding roads the annual accident rate along these roads actually increased slightly. Which of the following if true, most helps to explain the increase in accident rate?
A. Greatwater County has an unusually high proportion of narrow, winding roads. - does not help, the proportion may be higher or lower but accident rate should have decreased compared to previous accident rate.
B. In bad weather it can be nearly as difficult for drivers to see the road as it is at night. - passage reads edge markings makes drivers easier to see in poor visibility.
C. Prior to the painting of edge markings, Greatwater County's narrow, winding roads already had a somewhat higher accident rate than other Greatwater County roads. - winding roads may have accident rate of 80% compared to other GC roads... but with edge markings that particular rate should decrease.
D. Many of the accidents on narrow, winding roads involve a single vehicle veering off the road, rather than the collision of two vehicles. - passage doesn't compare the type of accident
E. After the markings were painted on the roads, many drivers who had gone out of their way to avoid driving on those roads at night no longer did so. correct - drivers who were avoiding driving in bad visibility now drives more at that time
Retired Moderator
avatar
Joined: 20 Dec 2010
Posts: 1836
Re: Many small roads do not have painted markings along their  [#permalink]

Show Tags

New post 06 Jul 2011, 12:29
4
Baten80 wrote:
Many small roads do not have painted markings along their edges. Clear edge markings would make it easier for drivers to see upcoming curves and to judge the car's position on the road, particularly when visibility is poor, and would therefore seem to be a useful contribution to road safety. However, after Greatwater County painted edge markings on all its narrow, winding roads the annual accident rate along these roads actually increased slightly. Which of the following if true, most helps to explain the increase in accident rate?

It is the resolve paradox type question.

Clear edge marking would contribute to road safety for the reasons mentioned.
But, after Clear edge marking were painted on a road, the accidents increased there. Why so OR how so?

A. Greatwater County has an unusually high proportion of narrow, winding roads.
This factor remained unchanged after or before the painting.

B. In bad weather it can be nearly as difficult for drivers to see the road as it is at night.
It is mentioned that these markings assist drivers to avoid accidents in poor visibility. It couldn't possibly have caused a negative result. Furthermore, this is also a constant factor in both scenarios.

C. Prior to the painting of edge markings, Greatwater County's narrow, winding roads already had a somewhat higher accident rate than other Greatwater County roads.
It draws a comparison between narrow roads AND other roads. We are concerned about narrow roads only before AND after the painting.

D. Many of the accidents on narrow, winding roads involve a single vehicle veering off the road, rather than the collision of two vehicles.
This may be true. But, passage doesn't give us any correlation between types of accident AND painting. Out of scope.

E. After the markings were painted on the roads, many drivers who had gone out of their way to avoid driving on those roads at night no longer did so.

This gives us a possible scenario where marking has an adverse effect. Earlier only 1000 people were regularly using the road at night, now 2000(some random number more than 1000) people are using the road. Greater number of cars on the road may result in more accidents.


_________________

~fluke

GMAT Club Premium Membership - big benefits and savings

Veritas Prep GMAT Instructor
User avatar
P
Joined: 16 Oct 2010
Posts: 8374
Location: Pune, India
Re: Many small roads do not have painted markings along their edges. Clear  [#permalink]

Show Tags

New post 03 Nov 2011, 02:54
Responding to a pm:

You have to explain the following:
Road markings led to an increase in road accidents.

You expect road markings to lead to a decrease in number of accidents. But they actually increased a little. How do you explain that? It is something similar to the situation that cars with ABS and airbags get involved in more accidents than cars without these features. How do you explain that? You expect these features to make the cars safer. It is because drivers of cars with ABS and air bags become careless. They know they will be protected in case of an accident. Hence more accidents occur.
So how do you explain the increase in the number of accidents when clear road markings were made? It is because people became careless and started driving at night too. Night driving is riskier than day driving on winding roads and hence the the number of accidents could have increased.
Bad weather has no connection with road markings. Road markings would not lead to more bad weather days and hence cause more accidents. Bad weather would have been there before the road markings and after the road markings. We are not given that the bad weather days increased after the road markings. Don't let other options drag you into out-of-scope territory.
_________________

Karishma
Veritas Prep GMAT Instructor

Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options >

GMAT self-study has never been more personalized or more fun. Try ORION Free!

Intern
Intern
avatar
Joined: 17 Jan 2012
Posts: 8
Many small roads do not have painted markings on their edges  [#permalink]

Show Tags

New post 22 Oct 2012, 07:26
Many small roads do not have painted markings on their edges...

Kindly explain!

in the 5th answer choice, what did author mean by "did so" ?
Attachments

10.png
10.png [ 411.48 KiB | Viewed 5614 times ]

VP
VP
User avatar
Joined: 02 Jul 2012
Posts: 1184
Location: India
Concentration: Strategy
GMAT 1: 740 Q49 V42
GPA: 3.8
WE: Engineering (Energy and Utilities)
Premium Member
Re: Question CR  [#permalink]

Show Tags

New post 22 Oct 2012, 08:12
1
leaderz wrote:
Kindly explain!

in the 5th answer choice, what did author mean by "did so" ?


Point E says that drivers who would previously have avoided driving at times of poor weather were now "driving at times of poor weather".

The bold green part is what the author means by did so.

Kudos Please... If my post helped.
_________________

Did you find this post helpful?... Please let me know through the Kudos button.

Thanks To The Almighty - My GMAT Debrief

GMAT Reading Comprehension: 7 Most Common Passage Types

Manager
Manager
avatar
Joined: 16 Oct 2011
Posts: 85
Location: United States
Reviews Badge
Re: Question CR  [#permalink]

Show Tags

New post 22 Oct 2012, 10:39
1
leaderz wrote:
Kindly explain!

in the 5th answer choice, what did author mean by "did so" ?


Clearly,

The drivers who used to drive on those roads(when painting was not done) started using those roads more (after painting was done), i.e, overused those roads after painting was done/More drivers used those roads.

Kudos if meaningful!

Best,
...
Manager
Manager
avatar
Status: Time to apply!
Joined: 24 Aug 2011
Posts: 139
Location: India
Concentration: Finance, Entrepreneurship
GMAT 1: 600 Q48 V25
GMAT 2: 660 Q50 V29
GMAT 3: 690 Q49 V34
GPA: 3.2
WE: Engineering (Computer Software)
Re: Many small roads do not have painted markings along their  [#permalink]

Show Tags

New post 03 Sep 2013, 07:05
But tell me one thing :

As per (E) there are more drivers on the road now .... fine ... But at the same time the markings on the road should also reduce the accidents also right ?


Say before there were 1000 cars on the road and the accident rate was 20%, i.e. No of accidents = 200

Now after yellow markings the accident rate = 5% and number of cars on road is 2000

Hence now no. of accidents = 5% of 2000 = 100
So we see that the no. of accidents have decreased...


Then how can (e) help explain the increase of accident rate ?
_________________

Didn't give up !!! Still Trying!!

Retired Moderator
User avatar
Joined: 16 Jun 2012
Posts: 1041
Location: United States
Premium Member
Re: Many small roads do not have painted markings along their  [#permalink]

Show Tags

New post 03 Sep 2013, 19:18
2
Practicegmat wrote:
But tell me one thing :

As per (E) there are more drivers on the road now .... fine ... But at the same time the markings on the road should also reduce the accidents also right ?


Say before there were 1000 cars on the road and the accident rate was 20%, i.e. No of accidents = 200

Now after yellow markings the accident rate = 5% and number of cars on road is 2000

Hence now no. of accidents = 5% of 2000 = 100
So we see that the no. of accidents have decreased...


Then how can (e) help explain the increase of accident rate ?


Hi practicegmat.

The argument says: "the annual accident rate along these roads actually increased slightly"

It means:
Before having painted markings: the accident rate is 5% (assume)
After having painted marking: the accident rate increased slightly, assume 5.5%

There is NOT a situation like your example (accident rate decreased).

==> KEY fact is: the accident rate increased, for example, from 5% to 5.5%. ==> It means the number of accidents also increased. Your task is to find an explanation for that. Do not question the facts because they are true.
==> Only E can help.

KEY of "resolve the paradox" is that you must assume Facts are always true, your task is just explain why there is a paradox.

Hope it's clear.
_________________

Please +1 KUDO if my post helps. Thank you.

"Designing cars consumes you; it has a hold on your spirit which is incredibly powerful. It's not something you can do part time, you have do it with all your heart and soul or you're going to get it wrong."

Chris Bangle - Former BMW Chief of Design.

Senior Manager
Senior Manager
avatar
Joined: 07 Sep 2010
Posts: 267
Re: Many small roads do not have painted markings along their  [#permalink]

Show Tags

New post 05 Oct 2013, 23:52
1
Practicegmat wrote:
But tell me one thing :

As per (E) there are more drivers on the road now .... fine ... But at the same time the markings on the road should also reduce the accidents also right ?


Say before there were 1000 cars on the road and the accident rate was 20%, i.e. No of accidents = 200

Now after yellow markings the accident rate = 5% and number of cars on road is 2000

Hence now no. of accidents = 5% of 2000 = 100
So we see that the no. of accidents have decreased...


Then how can (e) help explain the increase of accident rate ?


Hello PracticeGmat,

Here is my reasoning for the above question:

First of all, what is the paradox?

The paradox is that despite warning signs the accident rate increased slightly, the expectation was that the accidents should decrease or somewhat remain equal. Now, our task is to find an answer choice that explains that how can above situation happen?

Now, E says that the number of vehicles increased by greater than 50%(this is equivalent to Many). If this is true than the number of vehicles earlier lets sat 1000 is now increased to 1500, and the accident rate lest say 20 % is increased to 22% (as question says it increased slightly) - clearly you can see that the sign boards does help in reducing the accidents, since number of vehicles is increased by 50 %, and you would expect that the accident rate to go up significantly high, however currently it is not the case.
Makes sense.

Thanks
Manager
Manager
User avatar
G
Joined: 10 Apr 2018
Posts: 146
Re: Many small roads do not have painted markings along their edges. Clear  [#permalink]

Show Tags

New post 03 Oct 2018, 23:45
1
Hi GMATNinja,

The question stem and answer choices need to be posted for this question. Can you edit and paste the same

Many small roads do not have painted markings along their edges. Clear edge markings would make it easier for drivers to see upcoming curves and to judge the car's position on the road, particularly when visibility is poor, and would therefore seem to be a useful contribution to road safety. However, after Greatwater County painted edge markings on all its narrow, winding roads the annual accident rate along these roads actually increased slightly.

Which of the following if true, most helps to explain the increase in accident rate?

A. Greatwater County has an unusually high proportion of narrow, winding roads.
B. In bad weather it can be nearly as difficult for drivers to see the road as it is at night.
C. Prior to the painting of edge markings, Greatwater County's narrow, winding roads already had a somewhat higher accident rate than other Greatwater County roads.
D. Many of the accidents on narrow, winding roads involve a single vehicle veering off the road, rather than the collision of two vehicles.
E. After the markings were painted on the roads, many drivers who had gone out of their way to avoid driving on those roads at night no longer did so
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 49860
Re: Many small roads do not have painted markings along their edges. Clear  [#permalink]

Show Tags

New post 03 Oct 2018, 23:50
Probus wrote:
Hi GMATNinja,

The question stem and answer choices need to be posted for this question. Can you edit and paste the same

Many small roads do not have painted markings along their edges. Clear edge markings would make it easier for drivers to see upcoming curves and to judge the car's position on the road, particularly when visibility is poor, and would therefore seem to be a useful contribution to road safety. However, after Greatwater County painted edge markings on all its narrow, winding roads the annual accident rate along these roads actually increased slightly.

Which of the following if true, most helps to explain the increase in accident rate?

A. Greatwater County has an unusually high proportion of narrow, winding roads.
B. In bad weather it can be nearly as difficult for drivers to see the road as it is at night.
C. Prior to the painting of edge markings, Greatwater County's narrow, winding roads already had a somewhat higher accident rate than other Greatwater County roads.
D. Many of the accidents on narrow, winding roads involve a single vehicle veering off the road, rather than the collision of two vehicles.
E. After the markings were painted on the roads, many drivers who had gone out of their way to avoid driving on those roads at night no longer did so


___________________
Done. Thank you.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

GMAT Club Bot
Re: Many small roads do not have painted markings along their edges. Clear &nbs [#permalink] 03 Oct 2018, 23:50
Display posts from previous: Sort by

Many small roads do not have painted markings along their edges. Clear

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


Copyright

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®.