in a class of 30 students 10 are boys.What fraction of the class are boys and girls
boys 10/30 = 1/3
girls 20/30 = 2/3
Well, in this case, we can calculate the fraction of boys in the class by dividing the number of boys (10) by the total number of students (30). So, the fraction of boys in the class is 10/30, which simplifies to 1/3.
As for the girls, we can calculate their fraction by subtracting the fraction of boys from 1.
So, the fraction of girls in the class would be 1 - 1/3, which is 2/3.
Therefore, the fraction of the class that are boys is 1/3, and the fraction of the class that are girls is 2/3.
To find the fraction of the class that are boys, divide the number of boys by the total number of students in the class.
Number of boys = 10
Total number of students = 30
Fraction of boys = number of boys / total number of students
Fraction of boys = 10 / 30
Simplifying the fraction, we get:
Fraction of boys = 1/3
Since there are two genders (boys and girls), the fraction of girls can be calculated by subtracting the fraction of boys from 1 (since the sum of the fractions of boys and girls is equal to 1).
Fraction of girls = 1 - fraction of boys
Fraction of girls = 1 - 1/3
Fraction of girls = 2/3
Therefore, the fraction of the class that are boys is 1/3 and the fraction of the class that are girls is 2/3.
To find the fraction of the class that are boys and girls, we first need to determine the number of girls in the class.
Given that there are 30 students in total and 10 of them are boys, we can subtract the number of boys from the total number of students to find the number of girls.
Number of girls = Total number of students - Number of boys
= 30 - 10
= 20
So, there are 20 girls in the class.
Now, to find the fraction of the class that are boys, we divide the number of boys by the total number of students.
Fraction of boys = Number of boys / Total number of students
= 10 / 30
= 1/3
Therefore, the fraction of the class that are boys is 1/3.
To find the fraction of the class that are girls, we divide the number of girls by the total number of students.
Fraction of girls = Number of girls / Total number of students
= 20 / 30
= 2/3
Therefore, the fraction of the class that are girls is 2/3.