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

It is currently 02 Aug 2014, 00:50

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

Six shipments of machine parts were shipped from a factory

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
2 KUDOS received
Manager
Manager
avatar
Joined: 02 Dec 2012
Posts: 178
Followers: 2

Kudos [?]: 186 [2] , given: 0

Six shipments of machine parts were shipped from a factory [#permalink] New post 14 Dec 2012, 05:24
2
This post received
KUDOS
5
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

48% (03:23) correct 52% (02:51) wrong based on 303 sessions
Attachment:
Table.png
Table.png [ 23.3 KiB | Viewed 3684 times ]
Six shipments of machine parts were shipped from a factory on two trucks, with each shipment entirely on one of the trucks. Each shipment was labeled either S1, S2, S3, S4, S5, or S6. The table shows the value of each shipment as a fraction of the total value of the six shipments. If the shipments on the first truck had a value greater than 1/2 of the total value of the six shipments, was S3 shipped on the first truck?

(1) S2 and S4 were shipped on the first truck.
(2) S1 and S6 were shipped on the second truck.
[Reveal] Spoiler: OA
Expert Post
6 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18862
Followers: 3279

Kudos [?]: 22989 [6] , given: 2653

Re: Six shipments of machine parts were shipped from a factory [#permalink] New post 14 Dec 2012, 05:36
6
This post received
KUDOS
Expert's post
1
This post was
BOOKMARKED
Image
Six shipments of machine parts were shipped from a factory on two trucks, with each shipment entirely on one of the trucks. Each shipment was labeled either S1, S2, S3, S4, S5, or S6. The table shows the value of each shipment as a fraction of the total value of the six shipments. If the shipments on the first truck had a value greater than 1/2 of the total value of the six shipments, was S3 shipped on the first truck?

To simplify, let's assume that the total value of the shipments is 60 (LCM of 4, 5, 6, 20 15 and 10).

In this case: S1=15, S2=12, S3=10, S4=9, S5=8, and S6=6.

Given that the total value of the shipments on the first truck is greater than 1/2*60=30.

(1) S2 and S4 were shipped on the first truck. S2+S4=12+9=21. Since the value of the shipments on the first truck is greater than 30, then S3=10 may or may not be on the first truck. Not sufficient.

(2) S1 and S6 were shipped on the second truck. S1+S6=15+6=21. S3 cannot be on that truck sine in this case the value of the shipments on the second truck would be 31, which would mean that the value of the shipments on the first truck was 29<30. Thus S3 was shipped on the first truck. Sufficient.

Answer: B.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

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?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Expert Post
2 KUDOS received
Verbal Forum Moderator
Verbal Forum Moderator
User avatar
Status: Preparing for the another shot...!
Joined: 03 Feb 2011
Posts: 1425
Location: India
Concentration: Finance, Marketing
GPA: 3.75
Followers: 126

Kudos [?]: 571 [2] , given: 62

GMAT ToolKit User GMAT Tests User Premium Member
Re: Six shipments of machine parts were shipped from a factory [#permalink] New post 14 Dec 2012, 06:58
2
This post received
KUDOS
Expert's post
Walkabout wrote:
Attachment:
Table.png
Six shipments of machine parts were shipped from a factory on two trucks, with each shipment entirely on one of the trucks. Each shipment was labeled either S1, S2, S3, S4, S5, or S6. The table shows the value of each shipment as a fraction of the total value of the six shipments. If the shipments on the first truck had a value greater than 1/2 of the total value of the six shipments, was S3 shipped on the first truck?

(1) S2 and S4 were shipped on the first truck.
(2) S1 and S6 were shipped on the second truck.


Total sum is 60/60.

Given fact: Value of shipments on first truck > 30/60.
Question- was S3 shipped on first truck?

1)S2 and S4 were shipped on the first truck.
Sum of S2 and S4-21/60.
Anything that makes the sum more than 30/60 would counter.
If S2 were also on first truck then also the value of shipment becomes more than 30/60 and if S3 were also on first truck then also the value of shipment becomes more than 30/60.
Hence insufficient.

2) S1 and S6 were shipped on the second truck.
Sum of S1 and S6-21/60.
Now the key thing here is that the value of shipments on second truck has to be less than 30/60. So if we add S3 on second truck, the value of shipment becomes more than 30/60.
Hence it clearly implies that S3 is on first ship only.
_________________

Prepositional Phrases Clarified|Elimination of BEING| Absolute Phrases Clarified
Rules For Posting
www.Univ-Scholarships.com

Director
Director
avatar
Status: Gonna rock this time!!!
Joined: 22 Jul 2012
Posts: 550
Location: India
GMAT 1: 640 Q43 V34
GMAT 2: 630 Q47 V29
WE: Information Technology (Computer Software)
Followers: 2

Kudos [?]: 27 [0], given: 562

GMAT Tests User
Re: Six shipments of machine parts were shipped from a factory [#permalink] New post 04 Jan 2013, 21:09
Marcab wrote:
Walkabout wrote:
Attachment:
Table.png
Six shipments of machine parts were shipped from a factory on two trucks, with each shipment entirely on one of the trucks. Each shipment was labeled either S1, S2, S3, S4, S5, or S6. The table shows the value of each shipment as a fraction of the total value of the six shipments. If the shipments on the first truck had a value greater than 1/2 of the total value of the six shipments, was S3 shipped on the first truck?

(1) S2 and S4 were shipped on the first truck.
(2) S1 and S6 were shipped on the second truck.


Total sum is 60/60.

Given fact: Value of shipments on first truck > 30/60.
Question- was S3 shipped on first truck?

1)S2 and S4 were shipped on the first truck.
Sum of S2 and S4-21/60.
Anything that makes the sum more than 30/60 would counter.
If S2 were also on first truck then also the value of shipment becomes more than 30/60 and if S3 were also on first truck then also the value of shipment becomes more than 30/60.
Hence insufficient.

2) S1 and S6 were shipped on the second truck.
Sum of S1 and S6-21/60.
Now the key thing here is that the value of shipments on second truck has to be less than 30/60. So if we add S3 on second truck, the value of shipment becomes more than 30/60.
Hence it clearly implies that S3 is on first ship only.



The questions where we need to test multiple things, my brain finds it difficult to test different things. how do u do this?
by writing down the cases?
Also, To read and understand and get the lcm and to make all the ratios to have 60 in denominator, it took around 2 mins 45 secs.. after which I had to guess to avoid over shooting the time limit.

how much time did u take to solve this one?
_________________

hope is a good thing, maybe the best of things. And no good thing ever dies.

Who says you need a 700 ?Check this out : http://gmatclub.com/forum/who-says-you-need-a-149706.html#p1201595

My GMAT Journey : end-of-my-gmat-journey-149328.html#p1197992

Expert Post
2 KUDOS received
Verbal Forum Moderator
Verbal Forum Moderator
User avatar
Status: Preparing for the another shot...!
Joined: 03 Feb 2011
Posts: 1425
Location: India
Concentration: Finance, Marketing
GPA: 3.75
Followers: 126

Kudos [?]: 571 [2] , given: 62

GMAT ToolKit User GMAT Tests User Premium Member
Re: Six shipments of machine parts were shipped from a factory [#permalink] New post 04 Jan 2013, 21:28
2
This post received
KUDOS
Expert's post
Actually, I don't remember much about time but the LCM thing just comes intuitively not because I want to do this way but because I don't want to do much effort. Moreover I actually didn't take the LCM, I just looked for a common multiple and 60 seemed the best fit. Apart from 60, 120, 180 could have also been equally good.
As you mentioned that it took about 2min 45 sec to do this question, I shall say don't worry because some questions from topics such as SD, Probability, Algebra with which you are very comfortable will defnitely come on the test day. You may be able to solve those questions under 50-55 seconds and hence compensate for the former.
But for a piece for advice, just practice. Once you practice such questions, then you will become quite comfortable with the topic and the format of such questions.
Hope that helps.
_________________

Prepositional Phrases Clarified|Elimination of BEING| Absolute Phrases Clarified
Rules For Posting
www.Univ-Scholarships.com

Manager
Manager
avatar
Joined: 29 Oct 2013
Posts: 159
Concentration: Finance
GMAT 1: 750 Q48 V46
GMAT 2: Q V0
GRE 1: 327 Q161 V166
GPA: 3.7
WE: Corporate Finance (Retail Banking)
Followers: 3

Kudos [?]: 90 [0], given: 103

GMAT ToolKit User
Re: Six shipments of machine parts were shipped from a factory [#permalink] New post 20 May 2014, 03:27
Bunuel, Do you want to tag it down to 600-700? thanks
_________________

Please consider giving 'kudos' if you like my post and want to thank :)

Read about my journey to 750 here - a-non-native-speakers-journey-to-99-le-on-verbal-750overall-171722.html#p1367876

Re: Six shipments of machine parts were shipped from a factory   [#permalink] 20 May 2014, 03:27
    Similar topics Author Replies Last post
Similar
Topics:
6 Experts publish their posts in the topic In a shipment of 120 machine parts, 5 percent were defective Bunuel 11 13 Feb 2014, 01:29
3 Experts publish their posts in the topic Six shipments of machine parts were shipped from a factory carcass 4 18 Nov 2012, 12:45
Shipping Clerk: The five specially ordered shipments sent chunjuwu 7 02 Feb 2005, 05:53
Shipping Clerk: The five specially ordered shipments sent drdas 1 03 Oct 2004, 15:02
Shipping Clerk: The five specially ordered shipments sent kr8 1 08 Sep 2004, 16:01
Display posts from previous: Sort by

Six shipments of machine parts were shipped from a factory

  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®.