RRB NTPC CBT-1 previous year question
A trader marks his goods such that even after allowing a discount of 25%, he makes a profit of 10%. If he gives only 10% discount, then find the profit percentage.
Asked in RRB NTPC 2026 — 15 June Shift 2 · Quantitative Aptitude
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Correct answer: (D) 32%
Let CP=100. Since 25% discount gives 10% profit, MP×0.75=110, so MP=440/3. With 10% discount, SP=(440/3)×0.9=132, giving profit% = 32%.
हिंदी में प्रश्न
एक व्यापारी अपने माल पर इस प्रकार मूल्य अंकित करता है कि 25% की छूट देने के बाद भी उसे 10% का लाभ होता है। यदि वह केवल 10% का छूट देता है, तो लाभ प्रतिशत ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 28%
मान लें CP=100। चूँकि 25% छूट पर 10% लाभ होता है, MP×0.75=110, अतः MP=440/3। 10% छूट पर SP=(440/3)×0.9=132, जिससे लाभ% = 32% है।
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