Class 51 boys account for 56% of the class. There are 50 students in the class. How many boys are there?

Class 51 boys account for 56% of the class. There are 50 students in the class. How many boys are there?

50 times 56% is 28. There are 28 boys

The average score of the whole class is 87.5, and the number of students is 56. The average scores of boys and girls are 86 and 90 respectively. How many students are there?
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|| average score | number of people|
|The whole class|
|Boys | 86|
|Girls | 90|
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There are x girls and 56-x boys
86*(56-x)+90x=87.5*56
x=21
So there are 21 girls and 35 boys

Half of the boys and one fourth of the girls in class 52 are 20, and one fourth of the boys and one half of the girls are 19
There are () boys and () girls in this class

Male: 28 female: 24
Let X be male and y be female, then we can make two equations~
1/2X + 1/4Y = 20
1/4X + 1/2Y = 19

There are 16 students in class 61 who are 1 / 3 of boys and 1 / 4 of girls. There are 19 students in class 61 who are 1 / 3 of girls and 1 / 4 of boys. How many students are there in class 61?
Simple formulas and methods should be used

Are you from primary school?
X for girls and y for boys
y/3+x/4=16,y/4+x/3=19;
Solve the equations can be calculated out!
x+y=60

Write an English composition (five to six sentences) with my class as the topic. There are 43 students in my class, 19 girls and 24 boys in class 6 (2)

I'm in Class Two Grade Six.It 's a big class.There are 43 students .19 students are boys and 24 students are girls.We like helping each other.We are all friendly.

There are 16 more boys than 25 girls in class 6 (1), and 12 more girls than boys. How many boys are there in class 6 (1)?

A: there are 20 boys in class 6 (1)

There are 16 students in class 6 (1), 1 / 3 of male students and 1 / 4 of female students, 1 / 3 of female students and 4 / 4 of male students

What grade are you in

There are 275 boys in class one, 19 less than 1.5 times of girls

(275 + 19)÷1.5 + 275
=294÷1.5 +275
=196 +275
=471 (person)

In class 61, there are 16 boys and 16 girls, 19 girls and 19 boys
There are 16 boys and 16 girls in class 61, and 19 girls and 19 boys in class 61. How many students are there in class 61

There are x boys and y girls in class 6 (1)
1/3x+1/4y=16 ①
1/3y+1/4x=19 ②
The solution is: x = 12, y = 48
There are 12 boys, 48 girls, and 60 students in class 6 (1)

There are 16 boys and 14 girls in class 6 (1), and 19 girls and 14 boys in class 6 (1). How many students are there in class 6 (1)?

Suppose the number of boys is x and the number of girls is y, then: 13X + 14y = 16 ①; 14x + 13y = 19 ②; from ① + ② we can get: 13X + 14y + 14x + 13y = 16 + 19, (13X + 14x) + (14y + 13y) = 35712x + 712y = 35712 (x + y) = 35, x + y = 60; the number of boys and girls is 60, that is, the whole class is 60