SSC GD Constable previous year question
If at the same rate of interest, over 2 years, the simple interest is ₹40 and the compound interest is ₹60, find the principal (in ₹).
Asked in SSC GD Constable 2025: 12 Feb 2025 Shift 2 (Afternoon) · Quantitative Aptitude
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Correct answer: (B) 20
For 2 years, (CI − SI) = P(r/100)², and SI = Pr×2/100 = 40 ⟹ Pr = 2000. Solving with CI−SI=20 gives P = ₹20 (and r = 100%).
हिंदी में प्रश्न
यदि समान ब्याज दर पर, 2 वर्ष में, साधारण ब्याज ₹40 तथा चक्रवृद्धि ब्याज ₹60 है, तो मूलधन (₹ में) ज्ञात कीजिए।
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सही उत्तर: (B) 20
2 वर्ष के लिए, (CI − SI) = P(r/100)², और SI = Pr×2/100 = 40 ⟹ Pr = 2000। CI−SI=20 के साथ हल करने पर P = ₹20 (और r = 100%) प्राप्त होता है।
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