(i) the number of students who passed in the first and in the second division
     76+95=171 students
(ii) The ratio of the number of students who passed in the first second and in the third division.
RATIO  is   4:5:(25/19)    or      4:5: 1.3157894…….
225-29=196 (29students failed)
196-25=171. (Subtract 25 students from the 3rd division)
4x+5x= 171 (171 students from 1st and second division)
9x=171
     X=19
4x19=76 Â Â Â Â 5x19= 95 Â Â Â Â 1.31578.....x19= 25