SSC GD Constable previous year question
Simple interest and compound interest (compounding annually) on a principal at a certain rate of interest for 2 years are Rs. 12000 and Rs. 14400 respectively. What is the principal?
Asked in SSC GD Constable 2024: 21 Feb 2024 Shift 1 · Quantitative Aptitude
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Correct answer: (A) Rs. 15000
CI−SI=2,400=P×(r/100)². SI=12,000=P×r/100×2 ⟹ Pr/100=6,000. From the difference: 6,000×r/100=2,400 ⟹ r=40%, P=6,000/0.4=₹15,000.
हिंदी में प्रश्न
निश्चित ब्याज दर पर 2 वर्षों के लिए एक मूलधन पर साधारण ब्याज और चक्रवृद्धि ब्याज (वार्षिक रूप से संयोजित) क्रमशः 12000 रुपए और 14400 रुपए है। मूलधन कितना है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 17000 रुपए
CI−SI=2,400=P×(r/100)². SI=12,000=P×r/100×2 ⟹ Pr/100=6,000. From the difference: 6,000×r/100=2,400 ⟹ r=40%, P=6,000/0.4=₹15,000.
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