two-fifth of students in a mixed school are boys if there are 30 girls in the school how many are the boys
To find the number of boys in the school, let's first calculate the total number of students in the school.
Given that two-fifths (2/5) of the students are boys, it means that the remaining three-fifths (3/5) are girls.
Let's represent the total number of students in the school as 'x'.
Since 3/5 of 'x' represents the number of girls, we can set up the equation:
(3/5) * x = 30
To find 'x', we can multiply both sides of the equation by (5/3):
(5/3) * (3/5) * x = (5/3) * 30
Simplifying this equation:
x = 50
Therefore, there are 50 students in total in the school.
Since we know that there are 30 girls, we can find the number of boys by subtracting the number of girls from the total number of students:
Number of boys = Total number of students - Number of girls
= 50 - 30
= 20
Therefore, there are 20 boys in the school.
To find the number of boys in the mixed school, we need to use the information given about the proportion of boys.
The statement mentions that two-fifths of the students in the mixed school are boys. This ratio can be represented as 2/5.
Let's assume the total number of students in the school is 'x'.
According to the given proportion, 2/5 of the students are boys. Thus, the number of boys can be calculated by multiplying the total number of students (x) by the fraction indicating the proportion of boys (2/5):
Number of Boys = (2/5) * x
Further information is needed to proceed with an accurate calculation.