Question

If the student A scored 34 marks out of 50 in one subject and scored 70 marks out of 80 in another subject, then the percentage of marks scored by him is

• A. 70
• B. 80
• C. 75
• D. 85

Answer 1

The Correct Option is B

The percentage for the first subject is: \[ \frac{34}{50} \times 100 = 68% \] The percentage for the second subject is: \[ \frac{70}{80} \times 100 = 87.5% \] The overall percentage is the weighted average: \[ \frac{34 + 70}{50 + 80} \times 100 = \frac{104}{130} \times 100 = 80% \] To find the overall percentage from multiple subjects, calculate the weighted average based on total marks and total possible marks.