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

It is currently 23 Oct 2014, 09:59

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 takes Cassie fourteen minutes to load a certain video o

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
2 KUDOS received
Manager
Manager
avatar
Joined: 09 Feb 2013
Posts: 121
Followers: 1

Kudos [?]: 272 [2] , given: 17

It takes Cassie fourteen minutes to load a certain video o [#permalink] New post 28 Feb 2013, 04:20
2
This post received
KUDOS
3
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

65% (02:21) correct 35% (01:24) wrong based on 176 sessions
It takes Cassie fourteen minutes to load a certain video on her cellphone, and fourteen seconds to load that same video on her laptop. If Cassie could connect the two devices so that they operated in concert at their respective rates, how long would it take them to load the video, rounded to the nearest hundredth?

A. 7.17 seconds
B. 9.12 seconds
C. 11.44 seconds
D. 13.77 seconds
E. 14.00 seconds
[Reveal] Spoiler: OA

_________________

Kudos will encourage many others, like me.
Good Questions also deserve few KUDOS.


Last edited by Bunuel on 28 Feb 2013, 05:04, edited 1 time in total.
Edited the question.
Expert Post
2 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23398
Followers: 3610

Kudos [?]: 28834 [2] , given: 2854

Re: It takes Cassie fourteen minutes to load a certain video o [#permalink] New post 28 Feb 2013, 05:13
2
This post received
KUDOS
Expert's post
1
This post was
BOOKMARKED
emmak wrote:
It takes Cassie fourteen minutes to load a certain video on her cellphone, and fourteen seconds to load that same video on her laptop. If Cassie could connect the two devices so that they operated in concert at their respective rates, how long would it take them to load the video, rounded to the nearest hundredth?

A. 7.17 seconds
B. 9.12 seconds
C. 11.44 seconds
D. 13.77 seconds
E. 14.00 seconds


Cellphone rate = 1/(14*60) job/second;
Laptop rate = 1/14 job/second;

Combined rate 1/(14*60) + 1/14 = 1/t --> t = ~13.77 seconds.

Answer: D.

5-second approach: since the laptop rate is 60 times (!) as high as the cellphone rate (so much higher) then the time needed for both of them working together to complete the task would be just a little less than the time needed for the laptop operating alone (slow cellphone won't help much). Only D fits.

Hope it's clear.
_________________

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

Senior Manager
Senior Manager
avatar
Joined: 22 Nov 2010
Posts: 293
Location: India
GMAT 1: 670 Q49 V33
WE: Consulting (Telecommunications)
Followers: 5

Kudos [?]: 29 [0], given: 75

Re: It takes Cassie fourteen minutes to load a certain video o [#permalink] New post 28 Feb 2013, 06:29
Yes. I also chose the ans with approximation guess. As it is clear the majority of the download will be done by laptop but phone will also do very small portion of work. Therefore, ans should be less than 14 sec but should be very close to 14 sec i.e. 13.77
_________________

YOU CAN, IF YOU THINK YOU CAN

Director
Director
avatar
Joined: 03 Aug 2012
Posts: 914
Concentration: General Management, General Management
GMAT 1: 630 Q47 V29
GMAT 2: 680 Q50 V32
GPA: 3.7
Followers: 13

Kudos [?]: 239 [0], given: 318

Premium Member CAT Tests
Re: It takes Cassie fourteen minutes to load a certain video o [#permalink] New post 27 Sep 2013, 22:54
Rate(Cellphone) = 1/(14*60)
Rate ( Laptop) = 1/14

Combined Rate= 61/(14*60)

Rate * Time = Work

61/(14*60) * Time = 1

Time = 13.77
_________________

Rgds,
TGC!
_____________________________________________________________________
I Assisted You => KUDOS Please
_____________________________________________________________________________

CEO
CEO
User avatar
Joined: 09 Sep 2013
Posts: 2834
Followers: 207

Kudos [?]: 42 [0], given: 0

Premium Member
Re: It takes Cassie fourteen minutes to load a certain video o [#permalink] New post 21 Oct 2014, 15:06
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Re: It takes Cassie fourteen minutes to load a certain video o   [#permalink] 21 Oct 2014, 15:06
    Similar topics Author Replies Last post
Similar
Topics:
1 Taking the GMAT in the morning, need a last-minute critique. Stoneface 1 05 Nov 2013, 13:01
23 Experts publish their posts in the topic Machines A and B, working together, take t minutes to comple skamal7 12 23 Feb 2013, 00:44
10 Experts publish their posts in the topic 16 horses can haul a load of lumber in 24 minutes. 12 horses daviesj 11 22 Feb 2013, 01:27
4 Experts publish their posts in the topic It takes the average dryer 80 minutes to dry one full load knabi 15 24 Jul 2010, 07:38
3 minute video for mba's aaudetat 5 17 Sep 2008, 22:57
Display posts from previous: Sort by

It takes Cassie fourteen minutes to load a certain video o

  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®.