In a class of 40 students, if girls are 40%. Find total number of boys ? |
As pe the given question:
Total Student = 40
Girls = 40%
This question can be solved by two Methods:
Method 1: First Find Number of Girls and then find number of boys
Method 2: First Find percentage of boys and then find number of boys:
Method 1: Find Number of Girls and then find number of boys
Percentage of girls = 40% of total students
Since, we know that total students are 40, so we get:
Number of girls = 40% of 40
Convert % into fraction and we get:
= (40/100) X 40
Solve above expression and we get:
= 16
Therefore Number of Girls in the class is 16.
Now we know that total number of students in the class is 40, so we get:
Number of boys = Total number of students - number of girls
Put the respective values on the LHS of the above equation and we get:
Number of boys = 40 -16
Solve subtraction expression and we get:
= 24
Hence, number of boys in class is 24.
Method 2: Find percentage of boys and then find number of boys:
Percentage of girls = 40% of total students
Percentage of Boys = 100% - percentage of girls.
Put value of percentage of girls and we get:
Percentage of Boys = 100% - 40%
Solve subtraction expression and we get:
Percentage of Boys = 60%
Now we know percentage of boys, so we get:
Number of boys = 60% of total students
Since, we know that total students are 40, so we get:
Number of boys = 60% of 40
Convert % into fraction and we get:
= (60/100) X 40
Solve above expression and we get:
= 24
Hence, number of boys in class is 24.
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