QUESTION: 125

6. There are 40 students in a classroom, 9/20 of them are boys and 4/5 of them are right-handed. How many right-handed boys are there in the classroom?

Between 10 and 32.
Between 14 and 32.
Between 10 and 18.
Between 14 and 18.
Between 18 and 36.

Answer(s): C

Explanation:

There are (9/20 x 40 = 18) boys in the class. 80% of them are right-handed, meaning that (4/5 x 18 = 14.4). Answer C is the best answer.

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QUESTION: 126

In Jonathan’s pen there are 300 sheep’s. 5/6 of the sheep’s are white, 2/3 of the sheep’s have soft wool. What can’t be the number of white sheep’s that also have soft wool in the pen?

100.
200.
190.
180.
160.

Answer(s): A

Explanation:

There are (5/6 x 300 = 250) white sheep’s. There are (2/3 x 300 = 200) soft woolen sheep’s.
The maximum overlap is the size of the smallest among the groups, thus 200. The minimum overlap is (250 + 200 – 300 = 150).
Therefore, the number of sheep’s can be somewhere between 150 and 200.

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QUESTION: 127

Ross has 40 shirts, ¾ of the shirts are green and 1/10 is without buttons. Therefore Ross has between and shirts with buttons that are not green.

6 ; 10.
4 ; 25.
4 ; 10.
5 ; 25.
3 ; 10.

Answer(s): A

Explanation:

Notice that the groups that we are looking for a overlapping are the not-green shirts and the buttoned ones. The not-green shirts are a quarter of 40, 10 shirts.
The shirts with buttons are (9/10 x 40 = 36).
The maximum overlapping is the size of the smallest group: 10. The minimum overlapping is: 36 + 10 – 40 = 6. Therefore, A is the answer.

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QUESTION: 128

In the Kan film festival, 50 movies were presented. 3/5 of the movies are action movies and 4/5 is science fiction movies. How many of the movies were science fiction action movies?

Answer(s): C

Explanation:

There were (3/5 x 50 = 30) action movies.
There were (4/5 x 50 = 40) science fiction movies.
Exact overlapping is calculated by minimum overlapping method.
Therefore, there are (40 + 30 – 50 = 20) movies that belong to both categories.

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Free GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 32)

QUESTION: 125

Explanation:

QUESTION: 126

Explanation:

QUESTION: 127

Explanation:

QUESTION: 128

Explanation: