In a class there are 200 girls students . The ratio of number of boys to girls is 3 : 4 . Find total number of students in the school.

350 320 280 400

350

Boys   :    Girls     :       Total   3      :       4       :        7 ATQ,  4R = 200 ( given )  1R = 50 Total Number of students = 7R = 7 × 50 = 350