allery20 विद्यार्थियों के औसत अंक 60 हैं और 30 विद्यार्थियों के औसत अंक 70 हैं। कुल औसत क्या है?
A65
B68
C66
D67
Answer & Solution
Correct answer: C. 66
कुल योग क्रमशः 1200 और 2100 हैं, अतः 3300 को 50 विद्यार्थियों से विभाजित करने पर 66 प्राप्त होता है।
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