SSC GD Constable previous year question
Simple interest and compound interest on a principal at a certain rate of interest for 2 years is Rs. 12800 and Rs. 14400 respectively. What is the principal?
Asked in SSC GD Constable 2024: 20 Feb 2024 Shift 4 · Quantitative Aptitude
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Correct answer: (B) Rs. 25600
CI−SI = 1,600 = P×(r/100)². SI = 12,800 = P×r/100×2 ⟹ Pr/100=6,400. From the difference: 6,400×r/100=1,600 ⟹ r=25%, so P=6,400/0.25=₹25,600.
हिंदी में प्रश्न
2 वर्षों के लिए एक निश्चित ब्याज दर पर, मूलधन पर साधारण ब्याज और चक्रवृद्धि ब्याज क्रमशः 12800 रुपए और 14400 रुपए है। मूलधन कितना है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 24400 रुपए
CI−SI = 1,600 = P×(r/100)². SI = 12,800 = P×r/100×2 ⟹ Pr/100=6,400. From the difference: 6,400×r/100=1,600 ⟹ r=25%, so P=6,400/0.25=₹25,600.
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