Find all School-related info fast with the new School-Specific MBA Forum

It is currently 01 Oct 2014, 12:26

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

It is now known that to get the maximum out of a car engine

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Expert Post
1 KUDOS received
Moderator
Moderator
User avatar
Status: It always seems impossible until it's done!!
Joined: 29 Aug 2012
Posts: 402
Location: India
Followers: 20

Kudos [?]: 311 [1] , given: 129

GMAT ToolKit User Premium Member CAT Tests
It is now known that to get the maximum out of a car engine [#permalink] New post 18 Nov 2013, 09:30
1
This post received
KUDOS
Expert's post
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

68% (02:16) correct 32% (01:59) wrong based on 65 sessions
It is now known that to get the maximum out of a car engine one can do two things- use high octane fuel, which contains additives that extend the life and efficiency of the engine, or get the engine flushed at regular intervals, which removes all harmful substances from the engine. It has been shown by several studies that the use of high octane fuel is up to three times more effective in extending the life of the car engine than is the use of engine flushing. This does not, however, mean that engine flushing can play no role in extending the life of a car engine, because ______________________.

Which of the following logically completes the argument?

A) some studies have shown that using high octane fuel can lead to problems with a car's exhaust system.
B) high octane fuel costs much more than regular fuel and this cost is expected to increase even further over the next few years.
C) many car mechanics recommend the use of engine flushing over the use of high octane fuels.
D) the benefits of using high octane fuel are independent of the benefits of engine flushing.
E) Engine flushing when not done by expert mechanics, can cause permanent damage to the engine of the car.
[Reveal] Spoiler: OA

_________________

Believe you can and you're halfway there- Theodore Roosevelt

My Blog

Rules for posting in Quants Forum || Rules for posting in verbal forum

Improving from V30 to V40 | Improving from Q35-40 to Q47 | Bunuel Special Problem Collections New!!


Get the best GMAT Prep Resources with GMAT Club Premium Membership

Expert Post
Magoosh GMAT Instructor
User avatar
Joined: 28 Dec 2011
Posts: 2103
Followers: 522

Kudos [?]: 2165 [0], given: 31

Re: It is now known that to get the maximum out of a car engine [#permalink] New post 19 Nov 2013, 10:55
Expert's post
Gnpth wrote:
It is now known that to get the maximum out of a car engine one can do two things- use high octane fuel, which contains additives that extend the life and efficiency of the engine, or get the engine flushed at regular intervals, which removes all harmful substances from the engine. It has been shown by several studies that the use of high octane fuel is up to three times more effective in extending the life of the car engine than is the use of engine flushing. This does not, however, mean that engine flushing can play no role in extending the life of a car engine, because ______________________.

Which of the following logically completes the argument?

A) some studies have shown that using high octane fuel can lead to problems with a car's exhaust system.
B) high octane fuel costs much more than regular fuel and this cost is expected to increase even further over the next few years.
C) many car mechanics recommend the use of engine flushing over the use of high octane fuels.
D) the benefits of using high octane fuel are independent of the benefits of engine flushing.
E) Engine flushing when not done by expert mechanics, can cause permanent damage to the engine of the car.

Dear Gnpth,
I'm happy to help with this. :-)

First of all, here's a blog about complete-the-argument CR questions:
http://magoosh.com/gmat/2012/gmat-logic ... -argument/

In the penultimate sentence, we are told of the benefits of high octane fuel, so it's clear that use of high octane fuel is recommended. Then the last sentence suggests that engine flushing is also recommended --- in other words, a responsible car-owner should do both. We need a reason why a responsible car-owner should do both, instead of just one or the other.

(A) some studies have shown that using high octane fuel can lead to problems with a car's exhaust system.
A problem with high octane fuels --- this would cause us to re-think the penultimate sentence. It is not a reason to use both.

(B) high octane fuel costs much more than regular fuel and this cost is expected to increase even further over the next few years.
This would dissuade folks from using high octane fuels, but not necessarily for reasons related to what's best for the engine. This is irrelevant.

(C) many car mechanics recommend the use of engine flushing over the use of high octane fuels.
First of all, mechanics recommend this presumably because they get paid for the service of flushing the engine, but they don't stand to gain if car-owners buy high octane fuels at the pump. More importantly, this contradicts the penultimate sentence, so it is not a good conclusion.

(D) the benefits of using high octane fuel are independent of the benefits of engine flushing.
BINGO! If the benefits are independent, then that's an excellent reason to do both, because doing just one would provide none of the benefits of doing the other.

(E) Engine flushing when not done by expert mechanics, can cause permanent damage to the engine of the car.
This may be, be no one is recommending not having it done by an expert. This is irrelevant.

Choice (D) is the best answer here.
Mike :-)
_________________

Mike McGarry
Magoosh Test Prep

Image

Image

Re: It is now known that to get the maximum out of a car engine   [#permalink] 19 Nov 2013, 10:55
    Similar topics Author Replies Last post
Similar
Topics:
Manufacturers of motor oil for car engines have found avohden 2 23 Nov 2013, 13:24
1 Experts publish their posts in the topic Engineer Hans Monderman (1945-2008) became well-known for gmatbull 21 18 Nov 2012, 01:21
1 Salesman...I want to get out and get an MBA Pre777 6 02 Jun 2009, 13:04
Pie, the maximum i can get is 10... IrinaOK 6 12 Sep 2007, 14:14
Which car do I get? rhyme 85 12 Feb 2007, 20:35
Display posts from previous: Sort by

It is now known that to get the maximum out of a car engine

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.