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Bunuel
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Bunuel
All the members of a gymnastics team perform in either the rings or balance beam event and less than 22% of the members are male. Only 8 members on the team perform in the rings event, while twice that perform on the balance beam. If there are only 3 female members who perform in the rings event and one of those is the only member to perform in the rings and on the balance beam, how many total members are on the team?

(A) 12

(B) 13

(C) 18

(D) 23

(E) 24
­
This was my approach but I am not sure if it was correct approach.

Drawing venn diagram:

Total number of participants performing Rings n(R) = 8
Total number of participants performing Balance beam n(B) = 2*8 = 16

Given that there are 3 female participants who are on Rings but one of them is doing both rings and beams, means there is an overlap of sets, therefore, n(R∩B) = 1

To find total participants, find union of Rings and Balance beam.

\(n(R∪B) = n(R)+n(B)-n(R∩B) = 8+16-1 = 23\)

I did not use the data about 22% members being male. I don't know if this is relevant in the question. Bunuel can you please let me know if this is correct approach?





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a191291r

Bunuel
All the members of a gymnastics team perform in either the rings or balance beam event and less than 22% of the members are male. Only 8 members on the team perform in the rings event, while twice that perform on the balance beam. If there are only 3 female members who perform in the rings event and one of those is the only member to perform in the rings and on the balance beam, how many total members are on the team?

(A) 12

(B) 13

(C) 18

(D) 23

(E) 24
­
This was my approach but I am not sure if it was correct approach.

Drawing venn diagram:

Total number of participants performing Rings n(R) = 8
Total number of participants performing Balance beam n(B) = 2*8 = 16

Given that there are 3 female participants who are on Rings but one of them is doing both rings and beams, means there is an overlap of sets, therefore, n(R∩B) = 1

To find total participants, find union of Rings and Balance beam.

\(n(R∪B) = n(R)+n(B)-n(R∩B) = 8+16-1 = 23\)

I did not use the data about 22% members being male. I don't know if this is relevant in the question. Bunuel can you please let me know if this is correct approach?





 ­
­It seems correct.
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