सुमनने दसादशे 10 दराने 20,000 रुपये रक्कम वार्षिक चक्रवाढ व्याजाने दिली. जर तिला n वर्षानंतर 26,620 रुपये मिळाले, तर n चे मूल्य काढा:

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RRB Group D 9 Sept 2022 Shift 2 Official Paper
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  1. 2.8 वर्षे
  2. 2.5 वर्षे
  3. 3 वर्ष
  4. 2 वर्ष

Answer (Detailed Solution Below)

Option 3 : 3 वर्ष
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Detailed Solution

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दिलेल्याप्रमाणे:

मुद्दल = 20,000 रुपये

व्याज दर (R) = 10% प्रतिवर्ष

रक्कम =  26,620 रुपये

मुदत = n वर्षे

वापरलेले सूत्र:

रक्कम = मुद्दल × {1 + \(\frac{R}{100}\) } T ime

गणना:

प्रश्नानुसार,

रक्कम = मुद्दल × {1 + \(\frac{R}{100}\) } T ime

⇒ 26,620 = 20,000 × {1 + \(\frac{10}{100}\) } n

\(\frac{26,620}{20,000}\) = {1 + \(\frac{1}{10}\) } n

\(\frac{1331}{1000}\) = { \(\frac{11}{10}\) } n

⇒ ( \(\frac{11}{10}\) )³ = ( \(\frac{11}{10}\) ) n

⇒ n = 3

म्हणून, n वर्षांचे आवश्यक मूल्य 3 वर्षे आहे.

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