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If the ratio of male students to female students in a philos

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by BTGmoderatorDC » Sun Sep 22, 2019 4:04 am

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E

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If the ratio of male students to female students in a philosophy class is 3:5, and there is a total of 40 students in the class, how many female students are in the class?

A. 8
B. 15
C. 16
D. 24
E. 25

OA E

Source: Princeton Review
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by Jay@ManhattanReview » Sun Sep 22, 2019 10:46 pm
BTGmoderatorDC wrote:If the ratio of male students to female students in a philosophy class is 3:5, and there is a total of 40 students in the class, how many female students are in the class?

A. 8
B. 15
C. 16
D. 24
E. 25

OA E

Source: Princeton Review
Given that the ratio of male students to female students in a philosophy class is 3 : 5, say there are 3x male students and 5x female students; thus, there are 3x + 5x = 8x students. So, we have 8x = 40 => x = 5; thus, there are 5x = 5*5 = 25 female students.

The correct answer: E

Hope this helps!

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by Scott@TargetTestPrep » Tue Sep 24, 2019 2:33 pm
BTGmoderatorDC wrote:If the ratio of male students to female students in a philosophy class is 3:5, and there is a total of 40 students in the class, how many female students are in the class?

A. 8
B. 15
C. 16
D. 24
E. 25

OA E

Source: Princeton Review
We can create the equation:

3x + 5x = 40

8x = 40

x = 5

So, there are 5 * 5 = 25 female students.

Answer: E

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by Brent@GMATPrepNow » Wed Sep 25, 2019 7:47 am
BTGmoderatorDC wrote:If the ratio of male students to female students in a philosophy class is 3:5, and there is a total of 40 students in the class, how many female students are in the class?

A. 8
B. 15
C. 16
D. 24
E. 25

OA E

Source: Princeton Review
GIVEN: the ratio of male students to female students in a philosophy class is 3:5
3+5 = 8
So, for every 8 philosophy students, 3 are males and 5 are females.
In other words, 5/8 of the philosophy students are female.

So, if there are 40 students, the number of females = 5/8 of 40
= (5/8)(40)
= 25

Answer: E

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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