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In an acoustics class, 120 students are male and 100 student
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29 Apr 2019, 01:28
29 Apr 2019, 01:28
Expert Reply
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Question Stats:
66% (01:29) correct
33% (01:10) wrong based on 27 sessions
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In an acoustics class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?
(A) 5%
(B) 10%
(C) 16%
(D) 22%
(E) 25%
(A) 5%
(B) 10%
(C) 16%
(D) 22%
(E) 25%
Re: In an acoustics class, 120 students are male and 100 student
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15 Oct 2019, 11:31
15 Oct 2019, 11:31
We can calculate that 25% of 120 is 30 and 20% of 100 is 20.
Hence we have 30 male engineers and 20 female engineers. The 20% of 30 is 6 and the 25% of 20 is 5.
Therefore we have 11 total students of engineering who passed the exam out of a total number of engineering students which is 20 + 30 = 50.
So our answer is 11/50 = 0.22 (22%).
Answer is D.
Hence we have 30 male engineers and 20 female engineers. The 20% of 30 is 6 and the 25% of 20 is 5.
Therefore we have 11 total students of engineering who passed the exam out of a total number of engineering students which is 20 + 30 = 50.
So our answer is 11/50 = 0.22 (22%).
Answer is D.
gmatclubot
Re: In an acoustics class, 120 students are male and 100 student [#permalink]
15 Oct 2019, 11:31
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