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Bunuel
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In a certain school, there are 950 students: 500 boys and 450 girls. 15 Jan 2024, 09:15
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35% (medium)

Question Stats:

78% (02:20) correct 22% (02:36) wrong based on 245 sessions

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In a certain school, there are 950 students: 500 boys and 450 girls. If 30 percent of the girls and 55 percent of the boys are taller than 1.7 meters and no student is of height 1.7 meters, approximately what percentage of the students in the school are shorter than 1.7 meters?

A) 33%
B) 43%
C) 57%
D) 67%
E) 85%
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C
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In a certain school, there are 950 students: 500 boys and 450 girls. 15 Jan 2024, 10:21
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Bunuel
In a certain school, there are 950 students: 500 boys and 450 girls. If 30 percent of the girls and 55 percent of the boys are taller than 1.7 meters and no student is of height 1.7 meters, approximately what percentage of the students in the school are shorter than 1.7 meters?

A) 33%
B) 43%
C) 57%
D) 67%
E) 85%
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OA is C
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In a certain school, there are 950 students: 500 boys and 450 girls. 04 Feb 2026, 11:00
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Since there are only 2 events : Being shorter than 1.7m and being taller than 1.7m
The number of girls shorter than 1.7m = 450 - 0.3*450 = 315
The number of boys shorter than 1.7m = 500 - 0.55*500 = 225

Total no. of students shorter than 1.7m = 315+225= 540
Total % of students shorter than 1.7m = (540/950)*100 = 56.8%

Hence approximately 57% Option C
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Bunuel
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