Question

The average age of a class is 15.8 years. The
average age of the boys of the class is 16.4 years
while that of the girls is 15.4 years. What is the
ratio of boys to girls of the class?​

Answer 1

Answer:

Step-by-step explanation:

Let number of boys = x  , Let number of girls = y

Total numbers of students = x + y

(x + y) × 15.8 = 16.4x + 15.4y

0.6x = 0.4y

x/y = 0.4/0.6 = 2/3

Ratio of boys and girls in the class is 2:3