किस वार्षिक दर (प्रतिशत में) से 1,300 रुपये पर 8 वर्षों में साधारण ब्याज के रूप में 520 रुपये प्राप्त होंगे?

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RRB Technician Grade III Official Paper (Held On: 30 Dec, 2024 Shift 3)
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  1. 7%
  2. 8%
  3. 4%
  4. 5%

Answer (Detailed Solution Below)

Option 4 : 5%
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दिया गया है:

मूलधन (P) = ₹1,300

साधारण ब्याज (SI) = ₹520

समय (t) = 8 वर्ष

प्रयुक्त सूत्र:

SI = (P × r × t) / 100

जहाँ, r = दर

गणना:

520 = (1300 × r × 8) / 100

⇒ 520 = 104r

⇒ r = 520 / 104

⇒ r = 5

∴ सही उत्तर विकल्प (4) है।

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