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At Tyler High School, there are twice as many girls than boy
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22 May 2017, 01:11
22 May 2017, 01:11
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22% (01:40) correct
77% (01:31) wrong based on 87 sessions
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At Tyler High School, there are twice as many girls than boys on the yearbook staff. At one staff meeting, the percentage of girls attending was twice the percentage of boys. What percent of those attending were boys?
A) 20
B) 25
C) 30
D) 33
E) 50
Re: At Tyler High School, there are twice as many girls than boy
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27 Sep 2017, 08:56
27 Sep 2017, 08:56
2
Let's assume that the number of boys is X, then the number of girls is 2X.
At the meeting, let the number of boys be b and girls be g. Then, (g/2X)*100= 2*(b/X)*100, for which g=4b
Then, the total number of students at the meeting is g+b = 4b+b = 5b
Thus, as number of boys is b, %of boys is (b/5b)*100 = 20
Hence, Answer A!
At the meeting, let the number of boys be b and girls be g. Then, (g/2X)*100= 2*(b/X)*100, for which g=4b
Then, the total number of students at the meeting is g+b = 4b+b = 5b
Thus, as number of boys is b, %of boys is (b/5b)*100 = 20
Hence, Answer A!
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Re: At Tyler High School, there are twice as many girls than boy
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28 May 2018, 18:23
28 May 2018, 18:23
2
Expert Reply
Carcass wrote:
At Tyler High School, there are twice as many girls than boys on the yearbook staff. At one staff meeting, the percentage of girls attending was twice the percentage of boys. What percent of those attending were boys?
A) 20
B) 25
C) 30
D) 33
E) 50
We can let the number of girls = 20 and the number of boys = 10. We can let the percentage of girls attending = 100 and the percentage of boys = 50.
Thus, there were 20 girls and 5 boys, so the percentage of boys was 5/25 = 1/5 = 20%.
Answer: A
