Question

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.

Answer 1

(i) 12 students obtained marks in the group 40 – 60. 

(ii) 60 – 80 marks group have maximum number (14) of students. 

(iii) Number of students obtained more than 60 marks = 14 + 5 = 19.