The ratio of the number of students in schools X and Y is 4:7. if 15 students from Y join X, then the ratio becomes 1:1. What is the total number of students in the schools X and Y?

In a school 60% of the students are girls. If number of boys is 480, then what is the total number of students in the school?

In a school 70% of the students are girls.The number of boys are 510.Then the total number of students in the school is:

In a school 80 students like chocolate , 40 like coffee if the number of he student does not like any of hem is equal to the number of student who like both of them then what is the total number of students in the school ?

In a school 80 students like chocolate, 40 like coffee if the number of students doesn't like any of them is equal to the number of students who like both of them then what is the total number of students in the school?

60% students in a school are boys.Find the total number of students in the school if 120 are girls