SBI PO Prelims practice question
A cooperative of 40 farmers has a combined average land holding of 42 acres. Among them, 24 farmers (Group 1) have an average holding of 36 acres. Find the average land holding of the remaining 16 farmers (Group 2).
From a SBI PO Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (A) 51 acres
Total sum for all 40 farmers = 40 × 42 = 1680. Sum for the known group of 24 farmers = 24 × 36 = 864. Sum for the remaining 16 farmers = 1680 − 864 = 816. Required average = 816 ÷ 16 = 51 acres.
हिंदी में प्रश्न
एक सहकारी समिति के 40 किसानों की संयुक्त औसत भूमि जोत 42 एकड़ है। इनमें से, 24 किसानों (समूह 1) की औसत जोत 36 एकड़ है। शेष 16 किसानों (समूह 2) की औसत भूमि जोत ज्ञात कीजिए।
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सही उत्तर: (A) 51 एकड़
सभी 40 किसानों का कुल योग = 40 × 42 = 1680. ज्ञात समूह के 24 किसानों का योग = 24 × 36 = 864. शेष 16 किसानों का योग = 1680 − 864 = 816. अभीष्ट औसत = 816 ÷ 16 = 51 एकड़.
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