In a class, boys secure 69% marks on the average while girls secure 72% marks on the average. If the average marks of the entire class is 70% which of the following statements is valid?
1
The total number of students in the class is two times the number of girls.
2
The total number of students in the class is three times the number of boys.
3
The boys are two times the number of girls.
4
The girls are two times the number of boys.