Lesson: Data Sufficiency Basic - 10t01

Evaluate Each Statement Separately

[Page 10 of 22]

Time: 1 minute or less

Evaluate Each Statement Separately

Don’t combine them accidentally! Keep ‘em separate.

You’ve already considered the question stem below. Now, let’s consider separately each statement that goes with it. Statement (2) is shorter, so we’ll start with that:

Evaluate Statement (2) and select Sufficient or Insufficient, then click Continue.

A batch of cookies is divided among three jars. What fraction of the cookies is placed in the third jar?

(1) 1/3 of the cookies are placed in the first jar, while 13 of the cookies are placed in the second jar.

(2) The jars contain a total of 36 cookies, and 30 of those are in the first two jars.

  Sufficient Insufficient.    

Countinue

If you know the total number of cookies, 36, and the number in the other two jars, 30, then you can figure out the fraction of cookies in the third. Statement (2) is sufficient.

That means that you can eliminate Choices (A), (C), and (E) based on our previous exercises.

Statement (1) BY ITSELF is sufficient, but statement (2) by itself is not sufficient.
  Statement (2) BY ITSELF is sufficient, but statement 1 by itself is not sufficient.
Both statements TAKEN TOGETHER are sufficient, but NEITHER statement BY ITSELF is sufficient.
  EACH statement BY ITSELF is sufficient.
The two statements TAKEN TOGETHER are NOT sufficient.

Notice that we’ve ruled out 3 or the 5 answer choices simply by considering one Statement! This is one of the many advantages of this fixed-format question type.

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