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In a survey, 60 people were asked to rank three teams: Chelsea, PSG,
[#permalink]
15 Sep 2021, 21:17
15 Sep 2021, 21:17
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Question Stats:
54% (02:20) correct
45% (02:38) wrong based on 42 sessions
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In a survey, 60 people were asked to rank three teams: Chelsea, PSG, and Real Madrid, in order of their preference. All 60 people responded, and no two teams were ranked equally by any of the people surveyed. 3/5 of the people ranked PSG last, 1/10 ranked PSG before Chelsea, and 1/3 ranked PSG before Real Madrid.
A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Quantity A |
Quantity B |
Number of people who ranked PSG first |
2 |
A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Re: In a survey, 60 people were asked to rank three teams: Chelsea, PSG,
[#permalink]
30 Oct 2021, 19:03
30 Oct 2021, 19:03
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Number of people who put PSG last = 60 * 3/5 = 36
Number of people who put PSG at either 1st or 2nd position = 60 - 36 = 24
This is the same group of people who put PSG above Real Madrid OR Chelsea (The union of the two sets)
24 = (60 * 1/10) + (60 * 1/3) - (People who put PSG above both Chelsea and Real Madrid [Intersection])
Solve equation to answer "2" which corresponds to option "C"
Number of people who put PSG at either 1st or 2nd position = 60 - 36 = 24
This is the same group of people who put PSG above Real Madrid OR Chelsea (The union of the two sets)
24 = (60 * 1/10) + (60 * 1/3) - (People who put PSG above both Chelsea and Real Madrid [Intersection])
Solve equation to answer "2" which corresponds to option "C"
General Discussion
Re: In a survey, 60 people were asked to rank three teams: Chelsea, PSG,
[#permalink]
16 Sep 2021, 03:39
16 Sep 2021, 03:39
C
