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Submitted by dunnkyler on Wed, 2012-02-22 17:21
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# There are 12 boys and 15 girls in a class. What percent of the students in the class are girls?

There are 12 boys and 15 girls in a class. What percent of the students in the class are girls?

Submitted by Coloratus on Wed, 2012-02-22 20:23
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## Complete answer with full step-by-step explanations

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xx we xxxx xxxx x the xxxxxx of xxxxx (G x 15) xxx the number xx boys xxxx (B = 12), we can xxxxx xxxx xxx percentage xx girls is:
p(G) x G x (G x xx
p(G) x 15 / xxx x 15)
p(G) = 15 / xx
p(G) x 0.5555
xxxx x xxxxxx * 100%
p(G) = xxxxxx

Submitted by mathwonder on Tue, 2012-02-28 10:20
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## The answer is in the attachment

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Total xxxxxx of xxxxxxxx that xxx boys = 12
Total xxxxxx of xxxxxxxx xxxx xxx girls x xx
Total xxxxxx xx xxxxxxxx xx xxx xxxxx x xx x 15 = 27

file1.docx preview (58 words)

xxxxx xxxxxx xx students that are xxxx = 12

xxxxx xxxxxx xx xxxxxxxx xxxx are xxxxx = 15

Total number of students xx xxx xxxxx x xx + xx = xx

xxxxx xx the xxxxxxxx xx xxx class that are girls = Number of xxxxxxxxxxx xxxxxx of students

x xxxxx = 5/9

xxxxxxx of students that are girls = ratio of students xxxx xxx xxxxx * xxxx x xxxxxxxxxxxxxxx

Submitted by Doctor on Thu, 2012-02-23 05:28
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## 500/9 % - details below.

> There are 12 boys and 15 girls in a class.

Students means the sum of boys and girls of the class:

Since there are 12 boys and 15 girls, there are 27 students in the class.

> What percent of the students in the class are girls?

girls-to-students-ratio: 15/27 = 5/9

If you want to convert this number into percents then remember that

100 % = 1

Hence you only need to multiply your ratio with 100 % which corresponds to a multiplication by one. Remember: A multiplication by one never changes the value of your term!

Therefore you have:

15/27 = 5/9 = (5/9) * 1 = (5/9) * 100 % = (5*100/9) % = 500/9 % = (55+5/9)% = approx 55.55556 %

Just for the record:

> What percent of the students in the class are boys?

boys-to-students-ratio:

12/27 = 4/9 = (4/9) * 1 = (4/9) * 100 % = (4*100/9) % = (44+4/9)% = approx. 44,44444 %

When adding both values together you get 1=100%.

Proof: 15/27+12/27=27/27=1=100%.

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Submitted by Ali Bin Tariq on Thu, 2012-02-23 04:08
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Number of boys = 12

xxxxxx xx girls x 15

Total number xx student x xx

Percentage xx girls student = 15/27 * xxx

Submitted by Ali Bin Tariq on Thu, 2012-02-23 04:08
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Number xx boys = 12

Number of girls x 15

Total xxxxxx xx xxxxxxx x 27

xxxxxxxxxx xx girls student x 15/27 * 100

Submitted by Andrein on Wed, 2012-02-22 18:23
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## ≈ 55.56%

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First we xxxxxxxxx the number xx xxxxxxxx in xxx xxxxxx xxxxx xx the number of xxxx x the number of girls.
.
12 + xx x 27
x
xx will next xxx xxx xxxx of three:
If xxxxx are 15 xxxxx in x class of xx students then there are x in a class of xxx xxxxxxxxx
x
xx xxxxx ......................... 27 students
x xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx
----------------------------------------------
xx * 100 = x * 27 xx x = xxxxxxx => x ≈ xxxxx %
So xxx answer is: xxxxxx xx the xxxxxxxx in xxx class xxx girls.