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05 Sep 2019, 04:08
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A
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Difficulty:
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Question Stats:
70% (01:36) correct
30%
(01:24)
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There are 40 students in a classroom, 9/20 of students are boys and 4/5 of students are right-handed. What is the minimum number of right-handed boys possible?
A. 10
B. 12
C. 14
D. 16
E. 18
A. 10
B. 12
C. 14
D. 16
E. 18
26 Jul 2021, 08:11
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Bunuel
We are given that there are 18 boys (9/20*40=18) and 22 girls in the class. Also we know that out of 40 students 32 are right-handed (4/5*40=32).
Minimum number of right-handed boys possible is if ALL 22 girls are right-handed, so in this case 32-22=10 boys would be right-handed.
Answer: C.
General Discussion
05 Sep 2019, 04:09
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Bunuel
The same question about the maximum number: https://gmatclub.com/forum/there-are-40 ... 04563.html
