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# This is also based on an actually GMAT problem. A

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GMAT Instructor
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This is also based on an actually GMAT problem. A [#permalink]

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16 Jul 2003, 14:19
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This is also based on an actually GMAT problem.

A grapefruit that originally was 99% water by weight was left out in the sun. After some time, enough water evaporated from the grapefruit so that it is now only 96% water by weight. If the starting weight of the grapefruit was 100 grams, how many grams of water evaporated?

(A) 4 grams
(B) 6 grams
(C) 8 grams
(D) 24 grams
(E) 75 grams
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

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16 Jul 2003, 16:09
The ratio changes from 1/99 to 4/96, which reduces to 1/24. 99 - 75 = 24.
The answer is E.
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16 Jul 2003, 19:33

Inidial wt = 100, water = 99.

plug in 75.
new wt = 100-75 = 25. water wt = 99-75 == 24

24/25 == 96%
Eternal Intern
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16 Jul 2003, 19:37
What did you get on GMAT and how old are you?

How would you know; did you remember the questions from Prometric?
GMAT Instructor
Joined: 07 Jul 2003
Posts: 770
Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE
Followers: 26

Kudos [?]: 212 [0], given: 0

Re: Akami's score [#permalink]

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16 Jul 2003, 22:17
Curly05 wrote:
What did you get on GMAT and how old are you?

How would you know; did you remember the questions from Prometric?

NOYB.
NOYB.
I took the test 2 weeks ago.
I don't know what prometric is.
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

GMAT Instructor
Joined: 07 Jul 2003
Posts: 770
Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE
Followers: 26

Kudos [?]: 212 [0], given: 0

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16 Jul 2003, 22:18
Good to see everyone got this one correct. People in a hurry often mess this one up.
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

Eternal Intern
Joined: 07 Jun 2003
Posts: 467
Location: Lone Star State
Followers: 1

Kudos [?]: 149 [0], given: 0

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17 Jul 2003, 11:22
Why is your score so secretive, we don't know you, you can tell us how it went though, does it feel like Powerprep, I know the dS does according to sources.

Prometric runs the test in U.S. sites in Sylvan Learning Center.
Eternal Intern
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Posts: 467
Location: Lone Star State
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Kudos [?]: 149 [0], given: 0

AkamiBrah My Experience [#permalink]

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17 Jul 2003, 12:17
Well, I got a !!! Quant on Experience; are you a girl is that why your so afraid of your age description

These explanations seem faulty.

Original 99 g water 24 g water
1 g grapefruit 1 g grapefruit
Just a min-trick that's all it is
24/25=96 percent !

The trick is what makes up the rest of grapefruit. Dog doodle, I don't know:) And the 1 gram stays the same.

Are you married?

VT
GMAT Instructor
Joined: 07 Jul 2003
Posts: 770
Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE
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Re: AkamiBrah My Experience [#permalink]

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17 Jul 2003, 14:42
Curly05 wrote:
Well, I got a !!! Quant on Experience; are you a girl is that why your so afraid of your age description

These explanations seem faulty.

Original 99 g water 24 g water
1 g grapefruit 1 g grapefruit
Just a min-trick that's all it is
24/25=96 percent !

The trick is what makes up the rest of grapefruit. Dog doodle, I don't know:) And the 1 gram stays the same.

Are you married?

VT

Are you Klingon? You don't seem to read or understand even simple English very well. And your math skills indicate that you were brought up in a culture that has something other than 10 fingers and toes.

Just curious ....

_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

Manager
Joined: 08 Apr 2003
Posts: 149
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18 Jul 2003, 18:22
Let x grams be water evaporated...

So 96/100(100 -x) + 1 = 100 -x

Solving for x gives Ans as 75gs.
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24 Jan 2004, 10:57
From the conversation I still cannot figureout the official answer to this Q

Originally G = 1 gm W = 99 gm

W/(G+W) = 0.96 after evaporation
so
W = 24G
Since G = 1gm W remaining = 24gm
So 99-24 must have evaporated = 75gm
24 Jan 2004, 10:57
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# This is also based on an actually GMAT problem. A

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