Question
Download Solution PDFकक्षा X में 45 विद्यार्थी हैं जिनके औसत अंक 30 हैं और कक्षा Y में 35 विद्यार्थी हैं जिनके औसत अंक 18 हैं। दोनों कक्षाओं के विद्यार्थियों के औसत अंक ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
कक्षा X में 45 छात्र हैं जिनके औसत अंक 30 हैं।
कक्षा Y में 35 छात्र हैं जिनके औसत अंक 18 हैं।
प्रयुक्त सूत्र:
संयुक्त औसत अंक = \(\dfrac{\text{Total Marks of Class X} + \text{Total Marks of Class Y}}{\text{Total Students of Class X} + \text{Total Students of Class Y}}\)
गणना:
कक्षा X के कुल अंक = 45 × 30 = 1350
कक्षा Y के कुल अंक = 35 × 18 = 630
कुल छात्र = 45 + 35 = 80
⇒ संयुक्त औसत अंक = \(\dfrac{1350 + 630}{80}\)
⇒ संयुक्त औसत अंक = \(\dfrac{1980}{80}\)
⇒ संयुक्त औसत अंक = 24.75
∴ सही उत्तर विकल्प 2 है।
Last updated on Jun 3, 2025
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