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o-na [289]
3 years ago
9

Students in a dance class filled out a survey. There were 25 girls and some boys who

Mathematics
2 answers:
FromTheMoon [43]3 years ago
8 0
Given:
Girls = 25
Boys = ?
Number of students who prefer tap dance = 9
percentage of students who prefer tap dance = 20%

We need to divide 9 by 20% to get the total number of students who filled out a survey.

9 ÷ 20% = 45 total number of students

Girls + Boys = 45
25 + Boys = 45
boys = 45 - 25
boys = 20

The correct equation is: B. 0.2(x + 25) = 9

0.2x + 5 = 9
0.2x = 9 - 5
0.2x = 4
x = 4 / 0.2
x = 20

Maksim231197 [3]3 years ago
6 0
B . Because it explains their was 25 girls and some boys so you add x to the 25
(X+25)0.2= 9
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