Question

3/5 of class with total 45 students are girls. find the number of boys in the class.​

Answer 1

Answer:

18 boys

Step-by-step explanation:

Total no. of students in the class = 45

Given 3/5 of 45 are girls

Therefore, 3/5  X 45 = 3 X 9

                                  = 27 girls

No. of boys   = 45-27

                      = 18 boys

or

fraction of boys = 1 - 3/5 = 2/5

  No. of boys         = 2/5  X 45

                              = 2 X 9

                             = 18 boys