Math
The music teacher would like to have the same number of girls and of boys in the chorus. She finds that 5/8 of the chorus are girls but that if she can get 10 more boys, the chorus will have the same number of boys as of girls.
(a) How many students are in the chorus?
(b) If there are 178 children in the school, which unit fraction would you select to represent the fraction of students in the present chorus? (Round the number of students in the chorus to the nearest ten. Round the number of students in the school to the nearest hundred.)

if 5/8 are girls, then 3/8 are boys
let the number of girls be 5x , and the number of boys be 3x
5x = 3x + 10
2x = 10
x = 5
number of girls is 25 and boys is 15
total in chorus is 40
fraction of chorus kids to whole student body
= 40/178 = 20/89
I don't get the point of the "unit fraction" calculation in this question.
As I understand it, a unit fraction has a 1 in the numerator, so
1/(89/20) = appr 1/4 ???
or appr 40/200 = 1/(200/40) = 1/5 if we round 178 to 200
your pick.
posted by Reiny

hjd
posted by bob
Respond to this Question
Similar Questions

math
the ratio of girls to boys in the chorus is 3:2. If there are 50 students in chorus, how many boys are there and how many girls? 
Literature
How do the lines of the Chorus at the end of Antigone Part 2 affect the meaning of the play? The Chorus ponders the role of fate in determining the lives of people. The Chorus emphasizes the cruelty with which Zeus exercises his 
math (venn diagrams)
70% of 7 graders have iPhone and 60%are in chorus. However, 15% of 7th graders are neither in chorus or own phone. What % of students have an iPhone and are not in chorus 
Math
Which table correctly fills in the ratio table below? Boys 3 6 ___ 21 Girls 2 4 6 ____ A. Boys 3 6 9 21 Girls 2 4 6 20 B. Boys 3 6 9 21 Girls 2 4 6 8 C. Boys 3 6 13 21 Girls 2 4 6 8 D. Boys 3 6 9 21 Girls 2 4 6 14 I believe the 
Math
If the ratio of girls to boys on the swim team is 2:3, which of these shows the possible number of girls to boys: A. 20 girls, 35 boys B. 24 girls, 36 boys 
math
there were 490 altogether in 2 groups. group A consited of only boys and group b constied of only girls. ther were 2 and a half times as many girls as boys. some girls joined group b and foe every 4 boys in group a 32 more boys 
A class has the same number of girls and boys only
Aclass has the same number of girls and boys only eight boys were absent on aparticular day and the number of girls was doublethe number of boys what is the number of boysand girls ? 
English Expression
A: How many boys and girls are there in the park? B: There are five boys and girls in the park.  What is the meaning of B? Does it mean that there are only 5 people including boys and girls? Or does it mean 
psychology
Researchers have found that, during childhood: A) girls' gender schemas are more rigid than boys' gender schemas. B)when boys play with girls, the boys lose status. C)boys like it when girls dress and behave like boys. D)girls 
math
The Infinity Club consists of 5 boys and 6 girls. How many working groups of 5 people can be formed with: a)no restrictions (my answer is 11C5) b)all boys (is this correct 5C5) c)all girls (my answer 6C5) d)more girls than boys