What is reason behind this fact that boys and girls should not be married in young age?

The table below indicates the percentage of students and the ratio of boys and girls in the various streams of a college. (Total students = 2600) What is the ratio of boys and girls in the college?

The average age of 12 boys is 15 years and the average age of 18 girls is 12 years .What is the conbined average age of the boys and girls ,taken together ?

The average age of boys in a class is 16.66, while the average age of girls is 18.75. Thus the average age of all the 40 students of the class is 17.5.If the difference between the no. of boys and girls is 8, then the no. of girls in the class is:

The ratio of the number of boys to the number of girls in a school of 640 students is 5:3. If 30 more girls are admitted in the school, then how many more boys should be admitted so that the ratio of boys to that of girls, becomes 14:9?

What is the number of students in the class ? I Ratio of boys and girls is 3 : 4 ii Girls are 18 more than boys,