Q. A student scored 72, 85, 90 and 83 in four subjects. What marks must he score in the fifth subject to get an average of 82?
✅ Correct Answer: (B)
74
Explanation: Required total marks = 82 × 5 = 410 → current total = 330 → needed = 410 − 330 = 80? Correction: 72+85+90+83 = 330 → 410 − 330 = 80, not in options; nearest is 74 but actual correct = 80.
Explanation by: Mr. Dubey
Required total marks = 82 × 5 = 410 → current total = 330 → needed = 410 − 330 = 80? Correction: 72+85+90+83 = 330 → 410 − 330 = 80, not in options; nearest is 74 but actual correct = 80.