OG10 DS Quiz 9 2x

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OG10 DS Quiz 9 2x

By andrew@atlanticgmat.com / February 21, 2018

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———————————————————————————-REVIEW INSTRUCTIONS——————————————————————————————

Thorough review is critical to the learning process and for most people should take a significant amount of time (and effort!) potentially equally or surpassing the amount of time taken to do the question set.
1. Redo questions that you got wrong or struggled on without looking at the answers or explanations. Think. Rethink. Push yourself. Put pen to paper. Don’t review with only your eyes!
2. Once you’ve solved or if you aren’t able to solve in about 10 minutes carefully review the explanation (if provided). Again, put pen to paper and redo the question along with the explanation.
3. If we haven’t provided an explanation or if our explanation didn’t clear up your doubts google the first few words of the question and confirm the solution on the GMAT forums.
4. Except for CR and RC, take a screenshot and add it to your dropbox review folder so you can easily revisit the question when assigned review in your HW schedule.
5. Bring questions that you still find difficult to QA or to our sessions. For sessions add the screenshots to the “review in session” folder in your dropbox.
Here’s a video outlining the review process: https://www.youtube.com/edit?o=U&video_id=X6k3niNoGuA

This is a crucial part of the preparation so let’s make sure we get it right. If you have any questions contact andrew@atlanticgmat.com or luciano@atlanticgmat.com.

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Question 1 of 10

1. Question
If xy ≠ 0, is x/y < 0 ?

(1) x = –y

(2) –x = -(-y)
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 2 of 10

2. Question
Is the number x between 0.2 and 0.7?

(1) 560x < 280

(2) 700x > 280
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 3 of 10

3. Question
A swim club that sold only individual and family memberships charged $300 for an individual membership. If the club’s total revenue from memberships was $480,000, what was the charge for a family membership?

(1) The revenue from individual memberships was 1/4 of the total revenue from memberships.

(2) The club sold 1.5 times as many family memberships as individual memberships.
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 4 of 10

4. Question
Currently there are 50 picture books on each shelf in the children’s section of a library. If these books were to be placed on smaller shelves with 30 picture books on each shelf, how many of the smaller shelves would be needed to hold all of these books?

(1) The number of smaller shelves needed is 6 more than the current number of shelves.

(2) Currently there are 9 shelves in the children’s section.
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 5 of 10

5. Question
ls y = 6 ?

(1) y² = 36

(2) y²-7y+6 = 0
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 6 of 10

6. Question
The figure above represents the floor plan of an art gallery that has a lobby and l8 rooms. If Lisa goes from the lobby into room A at the same time that Paul goes from the lobby into room R, and each goes through all of the rooms in succession, entering by one door and exiting by the other, which room will they be in at the same time?

(1) Lisa spends 2x minutes in each room and Paul spends 3x minutes in each room.

(2) Lisa spends 10 minutes less time in each room than Paul does.
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 7 of 10

7. Question
Quadrilateral RSTU shown above is a site plan for a parking lot in which side RU is parallel to side ST and RU is longer than ST. What is the area of the parking lot?

(1) RU = 80 meters

(2) TU = 20√10 meters
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 8 of 10

8. Question
lf xy = -6, what is the value of xy(x + y)?

(1) x – y = 5

(2) xy² = 18
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 9 of 10

9. Question
If the list price of a new car was $12,300, what was the cost of the car to the dealer?

(1) The cost to the dealer was equal to 80 percent of the list price.

(2) The car was sold for $11,070, which was 12.5 percent more than the cost to the dealer.
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect
Question 10 of 10

10. Question
A certain employee is paid $6 per hour for an 8-hour workday. If the employee is paid 1 1/2 times this rate for time worked in excess of 8 hours during a single day, how many hours did the employee work today?

(1) The employee was paid $18 more for hours worked today than for hours worked yesterday.

(2) Yesterday the employee worked 8 hours.
- (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- (D) EACH statement ALONE is sufficient.
- (E) Statements (1) and (2) TOGETHER are NOT sufficient.
Correct

Incorrect

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OG10 DS Quiz 9 2x

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