Question

in a class of 42 students, the no. of boys is 2/5 of the number of girls. find the no. of boys and girls in the class. please reply quickly

Answer 1

Answer:

no. of girls = 30 and no. of boys = 12

Step-by-step explanation:

let the no. of girls be x. so the no. of boys is 2/5 of x

given that x + 2/5x = 42

(5x + 2x) ÷ 5 = 42

7x/5 = 42

7x = 42*5

x = (42*5) ÷ 7

x = 30. 2/5x = 12

girls = 30

boys = 12