Study the following graph and answer the question that follows.
Marks scored by five students in three subjects (Maths, English and Physics). Total marks for each subject are 100.

What is the difference between the total marks obtained by B and the total marks obtained by C?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 30.
The sum of total marks got by B in three subjects = 70 + 60 + 80 = 210
The sum of total marks got by C in three subjects = 80 + 70 + 90 = 240
Difference = 240 - 210 = 30