What is the average number of girls studying in schools C, D and E

What is the respective ratio between the number of students (boys and girls together) studying in school a and that in school C

Number of boys studying in school E is what percent more than the number of boys studying in school A

Number of students (boys and girls together) in standard V of school E is 20% less than those in standard X of the same school. How many students study in standard V in the same school

The number of students (boys and girls together) studying in school B are what percent less than that in school D

What is the difference between total number of boys studying in schools B and C together and the total number of girls in the same schools together