GMAT Quantitative Reasoning Practice Test 2

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Question : 25 of 100

Marks: +1, -0

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 .

Solution:

There are

(9 \/ 20 × 40=18)

boys in the class.

80 \%

of them are right-handed, meaning that

(4 / 5 × 18=14.4)

.

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