Question

To calculate the percentage of boys and girls in a class.Assume that there are 68 students and out of the 30 are girls.

Answer 1

40% are girls, this means (100–40)% are boys, that is 60% of the total students are boys. Now total number of students is equal to 50. Therefore the number of boys is (60/100)*50 which is equal to 30. So there are 30 boys in the class.