If a classroom contains 35 students, 2/5 of which are girls, then how many boys are in the class?

Solution:

Total number of students in a classroom = 35

Number of girls = 2/5 of the total number of students in a classroom

Remaining boys = 1 - 2/5 = 3/5 [Subtracting the fraction 2/5 from the whole]

To find the number of boys in the class we have to multiply the remaining boys with the total number of students

Number of boys = 3/5 × 35 = 21

Therefore, the number of boys in the class is 21.

If a classroom contains 35 students, 2/5 of which are girls, then how many boys are in the class?

Summary:

If a classroom contains 35 students, 2/5 of which are girls, then there are 21 boys in the class.