math
posted by Anonymous .
This table shows the numbers of students in different classes that are in the math club.
Students in math club
Boys / Girls
Mrs.Smith 3 / 4
Ms.Jones 4 / 6
Mr.Brown 3 / 4
a. What fraction of the students in the math club are boys from Mrs. Smithâ€™s class?
b. What fraction of the students in the math club are girls?
c. Some more girls joined the math club, but no more boys joined. The number of girls in the math club is now 23 of the total number of members. How many more girls joined the math club? Show your work or explain how you know.

math 
Damon
3/7
7+10+7 = 24 total students
14 are girls
so
14/24 = 7/12
suspect you mean 2/3 are girls
(14+x) /(24+x) = 2/3
42 + 3 x = 48 + 2x
x = 6 more girls 
math 
Rodger
a. is actually 3 / 24 because if I recall the problem says what fraction of the students in the math club are boys from Mrs.Smith class.So won't it be Mrs.Smith boys to all of the class.

math 
Damon
Rodger is right

math 
Rodger
c. there was 14 girls to start with so wouldn't you subtract 14 from 23 and get 9.

math 
Damon
I think you added 6 girls and get 20 out of 30

math 
Damon
oh, I assumed that the 23 was a typo and it meant 2/3
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