रेनुका ने 5% चक्रवृद्धि ब्याज पर 3 वर्षों के लिए एक डाकघर में 800 रुपये निवेश किये हैं। 3 वर्ष पूरे होने पर उसे कितनी रकम मिलेगी?

This question was previously asked in
KVS TGT WET (Work Experience Teacher) 8 Jan 2017 Official Paper
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  1. 910.70 रुपये
  2. 931.20 रुपये
  3. 926.10 रुपये 
  4. 824.30 रुपये

Answer (Detailed Solution Below)

Option 3 : 926.10 रुपये 
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Detailed Solution

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दिया गया है

रेणुका का निवेश = 800 रुपये

दर = 5%

समय = 3 वर्ष

सूत्र

 A = P(1 + r/100)n

जहाँ, मूलधन = P, ब्याज दर = r और समय = n

हल

⇒ 800(1 + 5/100)3

⇒ 800 × 105/100 × 105/100 × 105/100

⇒ 800 × 21/20 × 21/20 × 21/20

⇒ 926.10 रुपये 

सही विकल्प 3 है।

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