RRB NTPC CBT-1 previous year question
A trader mixes 12 kg of rice costing Rs 40 per kg with 18 kg of rice costing Rs 60 per kg. Find the average price per kg of the mixture.
Asked in RRB NTPC 2026 — 17 June Shift 1 · Reasoning
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Correct answer: (C) Rs 52
Average price = (12x40 + 18x60)/(12+18) = (480+1080)/30 = 1560/30 = Rs 52.
हिंदी में प्रश्न
एक व्यापारी 40 रुपये प्रति किग्रा वाले 12 किग्रा चावल को 60 रुपये प्रति किग्रा वाले 18 किग्रा चावल के साथ मिलाता है। मिश्रण की प्रति किग्रा औसत कीमत ज्ञात करें।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 52 रुपये
औसत कीमत = (12×40 + 18×60)/(12+18) = (480+1080)/30 = 1560/30 = 52 रुपये।
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