It is currently 23 Oct 2017, 10:46

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Take a look at this, problem or not

Author Message
Manager
Joined: 08 Jul 2006
Posts: 89

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

Take a look at this, problem or not [#permalink]

### Show Tags

11 Oct 2006, 15:57
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Take a look at this, problem or not?
Attachments

File comment: Averages..Word Document
Avg.doc [33.5 KiB]

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

Director
Joined: 23 Jun 2005
Posts: 840

Kudos [?]: 86 [0], given: 1

GMAT 1: 740 Q48 V42

### Show Tags

11 Oct 2006, 18:02
D)43%

When overall average = 90,

70 +2x/3 = 90
Simplifying,
x=100 = average score needed on the remaining 2/3rds of evaluations.

She needs an increase of (100-70)*100/70 = 42.8 = 43%

Kudos [?]: 86 [0], given: 1

Manager
Joined: 08 Jul 2006
Posts: 89

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

### Show Tags

11 Oct 2006, 18:56
Tell me, is the fact that the total score is over 110 irrelevant?

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

Director
Joined: 23 Jun 2005
Posts: 840

Kudos [?]: 86 [0], given: 1

GMAT 1: 740 Q48 V42

### Show Tags

11 Oct 2006, 19:00
Rayn wrote:
Tell me, is the fact that the total score is over 110 irrelevant?

In this case, I'd say it is irrelevant.

Kudos [?]: 86 [0], given: 1

Manager
Joined: 08 Jul 2006
Posts: 89

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

### Show Tags

11 Oct 2006, 19:13
For the exam sake, how would you discern whether to consider it or not?
Well, why did you ignore it?

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

Director
Joined: 06 Feb 2006
Posts: 893

Kudos [?]: 123 [0], given: 0

### Show Tags

12 Oct 2006, 00:05
I ignored that data because i indicate on the paper what i need to know....

Average=S/x

include what we need to achieve:

(70+(2/3)x)/2=90
70+(2/3*x)=180
2/3x=110
x=330/2
x=165

We know the score from the firs 1/3 of the supervisors.....

70=S/(1/3)x
70*(1/3)x=S... replace x with 165
70*55=S
S=3850... we know the sum of evaluations from 1/3 of the supervisors

We need to achieve:
90x=S
S=14850

So from the 2/3 of supervisors we need to achieve a total score of:
14850-3850=11000
or we need to achieve the average score from 2/3 of supervisors....
A=11000/(2/3)*165
A=11000/110
A=100

Darlene must increase her current average of 70 to 100:
30/70=0.43=43%

Kudos [?]: 123 [0], given: 0

Senior Manager
Joined: 28 Aug 2006
Posts: 303

Kudos [?]: 171 [0], given: 0

### Show Tags

12 Oct 2006, 01:11
Let's keep it simple...........

Let's suppose that there are only 3 evaluations.
He needs an average of 90. So total has to be 270

In one evaluation he got 70
So remaining two evaluations he should get 200
So the average of remaining two evaluations must be 100.

So it increased by 30/70 = 42.84%

So 43%
_________________

Kudos [?]: 171 [0], given: 0

SVP
Joined: 05 Jul 2006
Posts: 1751

Kudos [?]: 432 [0], given: 49

### Show Tags

12 Oct 2006, 03:35
Same work like Cicerone's

Kudos [?]: 432 [0], given: 49

Director
Joined: 06 Feb 2006
Posts: 893

Kudos [?]: 123 [0], given: 0

### Show Tags

12 Oct 2006, 05:59
cicerone wrote:
Let's keep it simple...........

Let's suppose that there are only 3 evaluations.
He needs an average of 90. So total has to be 270

In one evaluation he got 70
So remaining two evaluations he should get 200
So the average of remaining two evaluations must be 100.

So it increased by 30/70 = 42.84%

So 43%

yep this apprach is the best...

My approach was just to see why we do not need the 110 figure mentioned in the question....

Kudos [?]: 123 [0], given: 0

Director
Joined: 06 Sep 2006
Posts: 734

Kudos [?]: 49 [0], given: 0

### Show Tags

12 Oct 2006, 07:10
(70 + 2X)/3 = 90
2X = 270 - 70 ; X = 100

% Increase (100 - 70)/70 * 100
= 300/7
= 42.7
approximately 43%

Kudos [?]: 49 [0], given: 0

12 Oct 2006, 07:10
Display posts from previous: Sort by