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a sub 600 level question
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From the question stem, we know the number of doctorate is 2x (x is a variable) and the number of nondoctorate is 3x.
We are asked to answer the ratio after the change.


(1)
If the number of new hired is y.
The ratio after the change is

2x + y / 3x + 2y = the ratio (r)
The ratio changes as x and y change.
Insufficient.

(2)
If the number of new hired is y,
The ratio after the change is

2x + 50 / 3x + ?
Clearly insufficient.

(1) + (2)

2x + 50 / 3x + 100 = the ratio (r) .
The ratio changes as x changes.
Insufficient.
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No information given about how many/if doctorates resigned. Therefore, I&II combined Not Sufficient. ANS - E
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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).

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