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Difficulty:
25%
(medium)
Question Stats:
78% (01:41) correct
22%
(01:50)
wrong
based on 89
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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%
11 Apr 2019, 00:47
Kudos
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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%
engineering Male students = 0.25*120 = 30
engineering female students = 0.2*100 = 20
engineering Male students passed = 0.2*30 = 6
engineering Male students passed = 0.25*20 = 5
Total engineering students passed = 11/220 = 5%
Option A is correct
(A) 5%
(B) 10%
(C) 16%
(D) 22%
(E) 25%
engineering Male students = 0.25*120 = 30
engineering female students = 0.2*100 = 20
engineering Male students passed = 0.2*30 = 6
engineering Male students passed = 0.25*20 = 5
Total engineering students passed = 11/220 = 5%
Option A is correct
11 Apr 2019, 01:36
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Bunuel
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%
Male = 120 ; engr ; 30
Female= 100 ; engr; 20
--------- Engr------Pass-----fail----
male----- 30-------6-------24
female----20------5--------15
total------50------11-------39
total pass % of engr. 11/50 * 100 = 22%
IMO D
