Question

Ram scored 40 marks, Radha scored 45 marks while Raj scored 35 marks and Sham scored some marks in semester exam. The average marks scored by four in the semester exam is 40.5. Find the difference between the marks obtained by Radha and Sham.

5. 3

Answer 1

Correct Answer - Option 5 : 3

Given:

Ram scored 40 marks

Radha scored 45 marks

Raj scored 35 marks

Calculation:

Let marks scored by Sham in semester exam be M.

Total marks obtained by four in semester exam = 40 + 45 + 35 + M = 120 + M

Total marks obtained by four in semester exam = 40.5 × 4 = 162

⇒ 162 = 120 + M

⇒ M = 42

∴ Difference between the marks obtained by Radha and Sham = 45 - 42 = 3