Solved UPSC CDS/OTA Question
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Q · Data InterpretationMedium · 45s
What is the difference between the total number of teachers who teach physics and maths and the total number of teachers who teach chemistry and biology?
TopicData Interpretation
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Total number of teachers who teach physics and maths = (18 + 14)% of total number of teachers = 32/100 × 1650 = 528
Total number of teachers who teach chemistry and biology = (24 + 12)% of total number of teacher = 36/100 × 1650 = 594
Required difference = 594 – 528 = 66
Final Answer: Option C — 66