एक रक्कम ठराविक वार्षिक चक्रवाढ व्याज दराने 3 वर्षात 27 पट होते. तर वार्षिक व्याज दराची गणना करा.

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NVS Junior Secretariat Assistant (LDC) 2019 (S3)
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  1. 150%
  2. 100%
  3. 300%
  4. 200%

Answer (Detailed Solution Below)

Option 4 : 200%
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Detailed Solution

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दिलेले आहे:

रक्कम = 3 वर्षांत 27 P

संकल्पना:

चक्रवाढ व्याजात, रक्कम आणि मुद्दल यांचे गुणोत्तर दिले जाते:

\(\frac{A}{P} = (1 + \frac{R}{100})^n\)

गणना:

आपल्याला माहित आहे की,

\(\frac{A}{P} = (1 + \frac{R}{100})^n\)

\(⇒ \frac{27}{1} = (1 + \frac{R}{100})^3\)

\(⇒ 3^3 = (1 + \frac{R}{100})^3\)

\(⇒ 3 = (1 + \frac{R}{100})\)

⇒ R/100 = 3 - 1 = 2

⇒ R = 200%

म्हणून, वार्षिक व्याज दर 200% आहे.

Shortcut Trick रक्कम 3 वर्षात 27 पट होते

3x = 27
 
⇒ 3x = 33
 
⇒ x = 3
 
दर = (x - 1) × 100%
 
⇒ (3 - 1) × 100% = 200%
∴ वार्षिक व्याज दर 200% आहे.
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