धनराशि 2 वर्षों के बाद 12100 और 3 वर्षों के बाद 13310 हो जाती है, तो साधारण ब्याज की दर ज्ञात कीजिये

  1. 10%
  2. 12.5%
  3. 15%
  4. 8.5%

Answer (Detailed Solution Below)

Option 2 : 12.5%
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दिया गया है:

2 वर्षों के लिए धनराशि = 12100

3 वर्षों के लिए धनराशि = 13310

प्रयुक्त सूत्र:

साधारण ब्याज = (मूलधन × दर × समय)/100

गणना:

तीसरे वर्ष के लिए ब्याज

⇒ 13310 – 12100 = 1210

2 वर्षों के लिए ब्याज = 1210 × 2 = 2420

मूलधन = 12100 - 2420 = 9680

दर = (1210/9680) × 100 = 12.5%.

∴ ब्याज की दर 12.5% है।
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