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# If sixty-five percent of the students in a class are girls,then what

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Math Expert
Joined: 02 Sep 2009
Posts: 58453
If sixty-five percent of the students in a class are girls,then what  [#permalink]

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07 Mar 2019, 03:04
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91% (00:39) correct 9% (00:40) wrong based on 45 sessions

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If sixty-five percent of the students in a class are girls,then what is the ratio of the number of girls to the number of boys in the class?

A. 13/7
B. 6/5
C. 7/15
D. 7/13
E. 3/2

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Re: If sixty-five percent of the students in a class are girls,then what  [#permalink]

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07 Mar 2019, 06:25
Bunuel wrote:
If sixty-five percent of the students in a class are girls,then what is the ratio of the number of girls to the number of boys in the class?

A. 13/7
B. 6/5
C. 7/15
D. 7/13
E. 3/2

let total = 100
girls - 65 boys = 35
65/35
13/7
IMO A
Math Expert
Joined: 02 Aug 2009
Posts: 7978
Re: If sixty-five percent of the students in a class are girls,then what  [#permalink]

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07 Mar 2019, 06:27
Bunuel wrote:
If sixty-five percent of the students in a class are girls,then what is the ratio of the number of girls to the number of boys in the class?

A. 13/7
B. 6/5
C. 7/15
D. 7/13
E. 3/2

Let the total number of students be 100, so 65 are girls and the remaining 100-65 or 35 are boys..

Therefore, the ratio of the number of girls to the number of boys in the class = $$\frac{65}{35}=\frac{13}{7}$$

A
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Re: If sixty-five percent of the students in a class are girls,then what  [#permalink]

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10 Mar 2019, 19:54
Bunuel wrote:
If sixty-five percent of the students in a class are girls,then what is the ratio of the number of girls to the number of boys in the class?

A. 13/7
B. 6/5
C. 7/15
D. 7/13
E. 3/2

Since 65 percent are girls, 35 percent are boys, so the ratio of girls to boys is 65/35 = 13/7.

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Re: If sixty-five percent of the students in a class are girls,then what   [#permalink] 10 Mar 2019, 19:54
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