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Among 100 students in a college, 50 students play soccer, 40 students

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GMAT Date: 02-18-2019
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Among 100 students in a college, 50 students play soccer, 40 students  [#permalink]

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New post 14 Apr 2019, 07:43
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Difficulty:

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Question Stats:

53% (02:21) correct 48% (02:45) wrong based on 40 sessions

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Among 100 students in a college, 50 students play soccer, 40 students play hockey and 60 students play tennis. If each student plays at least 1 sport and the number of students who play exactly 2 sports is not less than 3 times the number of students who play all the 3 sports, what is the maximum number of students who play all the three sports?


A. 8
B. 10
C. 15
D. 25
E. 50
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Among 100 students in a college, 50 students play soccer, 40 students  [#permalink]

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New post 14 Apr 2019, 19:20
mangamma wrote:
Among 100 students in a college, 50 students play soccer, 40 students play hockey and 60 students play tennis. If each student plays at least 1 sport and the number of students who play exactly 2 sports is not less than 3 times the number of students who play all the 3 sports, what is the maximum number of students who play all the three sports?


A. 8
B. 10
C. 15
D. 25
E. 50


Let the number of students playing exactly 2 and 3 games be x and y...and \(x\geq{3y}\)..
The formula would give us the equation..
100=50+60+40-x-2y....x+2y=50.......We have added two times twice and three times thrice when we add all three 50+60+40, so we subtract X once and y twice
We are trying to maximize y, so take least value of x, that is 3y..
So 3y+2y=50....y=10

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Among 100 students in a college, 50 students play soccer, 40 students   [#permalink] 14 Apr 2019, 19:20
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Among 100 students in a college, 50 students play soccer, 40 students

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