GMAT Changed on April 16th - Read about the latest changes here

It is currently 22 May 2018, 12:52

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

Events & Promotions in June
Open Detailed Calendar

Earl can stuff advertising circulars into envelopes at the rate of 45

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

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 45251
Earl can stuff advertising circulars into envelopes at the rate of 45 [#permalink]

Show Tags

New post 05 Feb 2018, 06:54
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

78% (01:33) correct 22% (02:05) wrong based on 66 sessions

HideShow timer Statistics

Earl can stuff advertising circulars into envelopes at the rate of 45 envelopes per minute and Ellen requires a minute and a half to stuff the same number of envelopes. Working together, how long will it take Earl and Ellen to stuff 300 envelopes?

(A) 15 minutes

(B) 4 minutes

(C) 3 minutes 30 seconds

(D) 3 minutes 20 seconds

(E) 2 minutes

_________________

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

Senior Manager
Senior Manager
User avatar
S
Joined: 05 Dec 2016
Posts: 260
Concentration: Strategy, Finance
GMAT 1: 620 Q46 V29
GMAT ToolKit User
Re: Earl can stuff advertising circulars into envelopes at the rate of 45 [#permalink]

Show Tags

New post 05 Feb 2018, 07:12
Ellen rate = 2/3 * Earl rate = 2/3 * 45 = 30
combined rate = 45+30=75 per minute
300/75=4 min
answer B
BSchool Forum Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 2552
Location: India
GPA: 3.12
Premium Member CAT Tests
Earl can stuff advertising circulars into envelopes at the rate of 45 [#permalink]

Show Tags

New post 05 Feb 2018, 07:19
Bunuel wrote:
Earl can stuff advertising circulars into envelopes at the rate of 45 envelopes per minute and Ellen requires a minute and a half to stuff the same number of envelopes. Working together, how long will it take Earl and Ellen to stuff 300 envelopes?

(A) 15 minutes

(B) 4 minutes

(C) 3 minutes 30 seconds

(D) 3 minutes 20 seconds

(E) 2 minutes


Earl's rate - 45 envelopes per minute (or) 3 envelopes in 4 seconds
Ellen's rate - 45 envelopes per minute and a half (or) 2 envelopes in 4 seconds.

Working together they can stuff 3+2 = 5 envelopes in 4 seconds.

Therefore, the time taken by both of them to fill 300 envelopes is \(300*\frac{4}{5}\) = 240 seconds = 4 minutes(Option B)
_________________

You've got what it takes, but it will take everything you've got

Intern
Intern
avatar
B
Joined: 25 Dec 2014
Posts: 11
Location: India
Concentration: Healthcare, Strategy
GMAT 1: 680 Q47 V38
GPA: 3.8
WE: Pharmaceuticals (Pharmaceuticals and Biotech)
GMAT ToolKit User Reviews Badge
Re: Earl can stuff advertising circulars into envelopes at the rate of 45 [#permalink]

Show Tags

New post 05 Feb 2018, 20:13
Earl's rate= 45 Envelopes/min
Ellen's rate= 45* 2/3= 30 Envelopes/min

so Both together can stuff 75 envelope/min.
75 Envelope ---> 1 min
300 Envelope ---> 300/75= 4 min
Ans B= 4min
Expert Post
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2442
Re: Earl can stuff advertising circulars into envelopes at the rate of 45 [#permalink]

Show Tags

New post 06 Feb 2018, 17:55
Bunuel wrote:
Earl can stuff advertising circulars into envelopes at the rate of 45 envelopes per minute and Ellen requires a minute and a half to stuff the same number of envelopes. Working together, how long will it take Earl and Ellen to stuff 300 envelopes?

(A) 15 minutes

(B) 4 minutes

(C) 3 minutes 30 seconds

(D) 3 minutes 20 seconds

(E) 2 minutes


We see that Earl’s rate is 45 envelopes/minute and Ellen’s rate is 45/1.5 = 30 envelopes/minute. Thus, their combined rate is 45 + 30 = 75 envelopes/minute.

Thus, it will take them 300/75 = 4 minutes to stuff 300 envelopes.

Answer: B
_________________

Jeffery Miller
Head of GMAT Instruction

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

Re: Earl can stuff advertising circulars into envelopes at the rate of 45   [#permalink] 06 Feb 2018, 17:55
Display posts from previous: Sort by

Earl can stuff advertising circulars into envelopes at the rate of 45

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


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