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Data Interpretation · UPSC CDS/OTA · Question 30 of 55

Data Interpretation: The average marks obtained by 3 students in a test are 72. If two of them scored 68 and 75, what marks did the third student score?

Step-by-step solution. Data Interpretation for UPSC CDS/OTA.

Topic
Data Interpretation
Subject
Mathematics
Difficulty
Hard
Solve Time
45-60 sec

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Q · Data InterpretationHard · 45s

The average marks obtained by 3 students in a test are 72. If two of them scored 68 and 75, what marks did the third student score?

TopicData Interpretation
Question Typemultiple choice
DifficultyHard
Marking+1 / −0.33
Test Duration30 min

Step-by-Step Solution

The complete worked solution.

Every step explained - no skipped algebra.

Total marks = 72 × 3 = 216. Sum of first two students’ marks = 68 + 75 = 143. Third student's marks = 216 – 143 = 73.

Final Answer: Option B - 73
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The average marks obtained by 3 students in a test are… - Data Interpretation (Mathematics) Solved Question