The following table shows marks obtained by 40 students in a Mathematics quiz competition
Monthly Income |
Number of Workers |
0 - 20 |
3 |
20 - 40 |
6 |
40 - 60 |
12 |
60 - 80 |
14 |
80 - 100 |
5 |
Answer the following questions :
(i) Number of students who obtained marks in the groups 40 – 60.
(ii) This marks group having maximum number of students ?
(iii) Number of students who obtained more than 60 marks.