Marks obtained by different students are represented using the bar graph. Find the difference between (a) Pratik's and Shubendu's marks (b) Rohan's and Gaurav's marks. [2 MARKS]
Solution: 1 Mark each
From the graph,
(a) Marks obtained by Pratik = 30
Marks obtained by Shubendu = 60
Difference of marks obtained by them = 60 - 30 = 30
(b) Marks obtained by Rohan = 30
Marks obtained by Gaurav = 50
Difference of marks obtained by them = 50 - 30 = 20