Discussion
The average marks of a student in 5 subjects is 88. He scored 82, 85, 90, and 92 in four subjects. What are his marks in the fifth subject?
Answer: D
Total marks in 5 subjects = Average × Number of subjects = 88 × 5 = 440.
Sum of marks in four subjects = 82 + 85 + 90 + 92 = 349.
Marks in the fifth subject = Total marks - Sum of four subjects = 440 - 349 = 91.
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