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

It is currently 24 Jul 2014, 15:04

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

A software programmer does 20% of the work in 80% of the

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 15 Nov 2012
Posts: 4
Location: United States
Concentration: General Management, Technology
GMAT Date: 12-05-2012
GPA: 3.82
WE: Business Development (Computer Software)
Followers: 0

Kudos [?]: 5 [0], given: 3

A software programmer does 20% of the work in 80% of the [#permalink] New post 01 Dec 2012, 02:58
A software programmer does 20% of the work in 80% of the time, and 80% of the work in the remaining 20% of the time. If the code he writes is X lines long and he was given one month (30 days) to accomplish the task, then, assuming that the programmer works at a constant rate in each of the two stages, How many lines of code were written in the last two weeks, in terms of X?

1) 13x/15
2) 7x/15
3) 7x/60
4) 2x/3
5) x/2
2 KUDOS received
Senior Manager
Senior Manager
avatar
Joined: 22 Dec 2011
Posts: 299
Followers: 3

Kudos [?]: 71 [2] , given: 32

GMAT Tests User
Re: Work Problem - Need help on this. [#permalink] New post 01 Dec 2012, 03:55
2
This post received
KUDOS
manukumar wrote:
A software programmer does 20% of the work in 80% of the time, and 80% of the work in the remaining 20% of the time. If the code he writes is X lines long and he was given one month (30 days) to accomplish the task, then, assuming that the programmer works at a constant rate in each of the two stages, How many lines of code were written in the last two weeks, in terms of X?

1) 13x/15
2) 7x/15
3) 7x/60
4) 2x/3
5) x/2


Pick nos. Take x = 60
1st stage -> 20% of the work in 80% of the time
So 20% of 60 = 12
and 80% of 30 (nos of days) = 24
So he writes 12 lines of code in 1st 24 days

2nd stage -> 80% of the work in the remaining 20% of the time
so he writes 48 lines of code in last 6 days.

The 2 boldface are your rates.
In the last 14 days comprises of both the stages.
in the 1st 8 days he writes at the rate of\frac{12}{24} \frac{lines}{days} so he writes 4 lines ( 8 * \frac{12}{24})
in the last 6 days he writes at the rate of\frac{48}{6} lines / days so he writes 48 lines (6 *\frac{48}{6})

totally he writes 52 lines. This is the final value / target value.
Substitute X = 60 and check which one results in 52.

Only option A gives 52 when x = 60.

Cheers
Re: Work Problem - Need help on this.   [#permalink] 01 Dec 2012, 03:55
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic top mba programmes requiring no work experience vishalmikki 2 26 Jun 2013, 10:12
16 Experts publish their posts in the topic A software programmer does 20% of the work in 80% of the vivatran 21 06 Mar 2011, 04:42
Among 200 programmers working for an IT company, 30% know bmwhype2 6 06 Nov 2007, 14:02
Does the GMATPrep software ever malfunction? zipper7 2 06 Sep 2006, 22:48
15 Java programmers, working in a constant pace, finish a jimishg 5 07 Sep 2004, 01:30
Display posts from previous: Sort by

A software programmer does 20% of the work in 80% of the

  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®.