40% of the employees in a factory are workers and the rest are executives. Each worker earns Rs. 39,000 annually and each executive earns Rs. 42,000 annually. What is the average annual income of all employees together?

40% of the employees in a factory are workers and the rest are executives. Each worker…

Paper 1 · Mathematical Reasoning and Aptitude UGC NET June 2019

एक कारखाने में 40% कर्मचारी श्रमिक हैं तथा शेष अधिकारी हैं। प्रत्येक श्रमिक वार्षिक Rs. 39,000 तथा प्रत्येक अधिकारी वार्षिक Rs. 42,000 कमाता है। सभी कर्मचारियों की मिलाकर औसत वार्षिक आय क्या है?

ARs. 40,500

BRs. 40,800 ✓ Correct

CRs. 41,000

DRs. 41,500

Answer: B

Explanation. प्रति 100 में 40 श्रमिक तथा 60 अधिकारी होने पर, भारित औसत (40 x 39000 + 60 x 42000)/100 = 40800 है। अतः विकल्प B।

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