Direction: Study the direction and answer the following questions.

There are three class in school  8th , 9th and 10th. In each of the given class male students and female students are there. Total number of student in class 8th 1200. the number of females students in class 9th are 2800. The number of students in class 10th is 3600. The number male student in class 8th is 50% less than the number of male students in 10th class. The number of male and female ratio of class 10th students is 1 : 1 . The number of males student in class 9th 800 less in the females in class 9th.