Question

a . The ratio of number of boys to number of girls in a class is 3:5. What percentage of the students in the class are boys? step by step
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Answer 1

Answer:     The percentage of the boys in the class is 60%

Step-by-step explanation:

Given :

The ratio of  number of boys to  of number of girls in a class  = 3 : 2

 Let, take given number of boys be = 3a

                 given number of girls be = 2a

      ∴  The total number of students = 3a +2a

                                                            = 5a

     ∴ The % of boys in class = $\frac{3a}{5a}$ × 100

                                               = $\frac{3}{5}$ × 100

                                               = 60%