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

It is currently 23 Jan 2019, 12:05

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 in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • Key Strategies to Master GMAT SC

     January 26, 2019

     January 26, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.
  • Free GMAT Number Properties Webinar

     January 27, 2019

     January 27, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes.

In each production lot for a certain toy, 25 percent of the

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

Hide Tags

 
Manager
Manager
avatar
Joined: 11 May 2007
Posts: 103
In each production lot for a certain toy, 25 percent of the  [#permalink]

Show Tags

New post Updated on: 28 Dec 2018, 05:45
2
5
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

80% (01:33) correct 20% (01:41) wrong based on 240 sessions

HideShow timer Statistics

In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B. If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?

(A) 15
(B) 25
(C) 30
(D) 35
(E) 40

Project PS Butler : Question #109


Subscribe to get Daily Email - Click Here | Subscribe via RSS - RSS

Originally posted by yogachgolf on 27 Nov 2007, 15:21.
Last edited by HKD1710 on 28 Dec 2018, 05:45, edited 2 times in total.
Renamed the topic, edited the question, added the OA and moved to PS forum.
Most Helpful Expert Reply
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52431
Re: In each production lot for a certain toy, 25 percent of the  [#permalink]

Show Tags

New post 27 Jan 2014, 01:26
5
3
yogachgolf wrote:
In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B. If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?

(A) 15
(B) 25
(C) 30
(D) 35
(E) 40


Double-set matrix solution:
Attachment:
Untitled.png
Untitled.png [ 3.79 KiB | Viewed 4603 times ]
Yellow box corresponds to the number of the toys that are blue and size B.

Answer: D.
_________________

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

General Discussion
SVP
SVP
avatar
Joined: 29 Mar 2007
Posts: 2421
Re: In each production lot for a certain toy, 25 percent of the  [#permalink]

Show Tags

New post 27 Nov 2007, 15:39
yogachgolf wrote:
In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B. If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?
(A) 15
(B) 25
(C) 30
(D) 35
(E) 40



D. 50-15=35. Best to use a double set matrix.
Manager
Manager
avatar
Joined: 11 May 2007
Posts: 103
Re: In each production lot for a certain toy, 25 percent of the  [#permalink]

Show Tags

New post 27 Nov 2007, 15:43
GMATBLACKBELT wrote:
yogachgolf wrote:
In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B. If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?
(A) 15
(B) 25
(C) 30
(D) 35
(E) 40



D. 50-15=35. Best to use a double set matrix.


What is double set matrix?
SVP
SVP
avatar
Joined: 29 Mar 2007
Posts: 2421
Re: In each production lot for a certain toy, 25 percent of the  [#permalink]

Show Tags

New post 27 Nov 2007, 15:57
2
yogachgolf wrote:
GMATBLACKBELT wrote:
yogachgolf wrote:
In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B. If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?
(A) 15
(B) 25
(C) 30
(D) 35
(E) 40



D. 50-15=35. Best to use a double set matrix.


What is double set matrix?


There is a thread on here about double and triple matrix's by Killersquirrel.
Attachments

Double Matrix.xls [13.5 KiB]
Downloaded 210 times

To download please login or register as a user

VP
VP
avatar
Joined: 28 Dec 2005
Posts: 1444
Re: In each production lot for a certain toy, 25 percent of the  [#permalink]

Show Tags

New post 16 Dec 2007, 09:01
Got B. I quite like drawing trees for these type of questions. Allows me to visualize things much easier.

We know 10 toys are red and size a out of 100. Moving up the tree, we can find out that overall 25 toys are red, because 25% of toys are red, and 25% of 100 is 25. That leaves 15 red and size B

Moving to the blue side, overall we must have 25 blue. Since 50% of toys are size b, and we already have 15 size b of red, we need size b red + size b blue = 50, and 50-15=35
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: In each production lot for a certain toy, 25 percent of the  [#permalink]

Show Tags

New post 26 Feb 2018, 10:15
yogachgolf wrote:
In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B. If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?

(A) 15
(B) 25
(C) 30
(D) 35
(E) 40


We are given that we have 100 toys, and we see that 50 are size A and 50 are size B.

We also see that 75 toys are blue and 25 are red.

Since 10 toys are red and size A, 50 - 10 = 40 are blue and size A.

Since 40 toys are blue and size A, 75 - 40 = 35 are blue and size B.

Answer: D
_________________

Jeffery Miller
Head of GMAT Instruction

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

GMAT Club Bot
Re: In each production lot for a certain toy, 25 percent of the &nbs [#permalink] 26 Feb 2018, 10:15
Display posts from previous: Sort by

In each production lot for a certain toy, 25 percent of the

  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®.