In a school with 600 students, the average age of the boys is 12 years and that of the girls is 11 years. If the average age of the school is 11 years 9 months then the number of girls in the school is

(a) 150 (b) 250 (c) 350 (d) 450

In a school with 600 students, the average age of the boys is 12 years and that of the girls is 11 years. If the average age of the school is 11 years 9 months then the number of girls in the school is

(a) 150 (b) 250 (c) 350 (d) 450

1 Answer

127 votes

Let the number of girls be Then, the number of boys =

Then,

127 votes

127