Question
A sum of Rs. 12,000 deposited at compound interest becomes double after 5 years. After 20 years, it will become:
Answer: Option D
- 12000 x ( 1+ R ) 5 = 24000 => ( 1+ R ) 5 = 2 100 100 ( ( 1+ R ) 5 100 ) 4 = 24 = 16 ( 1+ R ) 20 100 = 16 P ( 1+ R ) 20 100 = 16P 12000 ( 1+ R ) 20 = 16 x 12000 = 192000
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- 12000 x ( 1+ R ) 5 = 24000 => ( 1+ R ) 5 = 2 100 100 ( ( 1+ R ) 5 100 ) 4 = 24 = 16 ( 1+ R ) 20 100 = 16 P ( 1+ R ) 20 100 = 16P 12000 ( 1+ R ) 20 = 16 x 12000 = 192000
100
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