Free GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 48)

Page 48 of 182

In the faculty of Reverse-Engineering, 226 second year students study numeric methods, 423 second year students study automatic control of airborne vehicles and 134 second year students study them both. How many students are there in the faculty if the second year students are approximately 80% of the total?

  1. 515.
  2. 545.
  3. 618.
  4. 644.
  5. 666.

Answer(s): D

Explanation:

Use the group formula.
Total = groupA + groupB – Both + Neither.
Total = 226 + 423 – 134 + 0 = 515 second year students.
The second year students are 80% of the total amount, therefore (515/80 x 100 = 643.75). The best answer is D.



In the Biotechnology class of 2000, there were X graduates. 32 of the graduates found a job, 45 continued on to their second degree and 13 did both. If only 9 people didn’t do both, What is X equal to?

  1. 69.
  2. 71.
  3. 73.
  4. 75.
  5. 76.

Answer(s): C

Explanation:

Use the group formula.
Total = groupA + groupB – Both + Neither. Total = 32 + 45 – 13 + 9 = 73 graduates.



Kramer can pack X boxes of cigarettes per minute. If there are Y boxes of cigarettes in one case, How many cases can Kramer pack in 2 hours?

  1. 60X/Y.
  2. 120X/Y.
  3. 60Y/X.
  4. 120Y/X.
  5. (X + Y)/60.

Answer(s): B

Explanation:

Y/X is the time it takes Kramer to fill a case with boxes (in minutes).
In two hours there are 120 minutes, so 120/(Y/X) is 120X/Y, and that is the number of cases that Kramer can fill in two hours.



The roof of an apartment building is rectangular and its length is 4 times longer than its width. If the area of the roof is 784 feet squared, what is the difference between the length and the width of the roof?

  1. 38.
  2. 40.
  3. 42.
  4. 44.
  5. 46.

Answer(s): B

Explanation:

The area of a rectangle is (length) x (width), let X be the width of the roof 4X2 = 784 X2 = 196 X = 14.
The width of the roof is 14 and the length is 56. The difference is (56-14 = 42).



Page 48 of 182



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