Use graph (squared paper) to solve this question.

(i) Draw the ogive for the following frequency distribution.

Marks	No. of students
0-9	5
10-19	9
20-29	16
30-39	22
40-49	26
50-59	18
60-69	11
70-79	6
80-89	4
90-99	3

Use your graph to find :

(ii) the median

(iii) the number of students who secured more than 75% marks.