A sum of Rs
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A sum of Rs. 12,000 deposited at compound interest doubles after 5 years. After 20 years it will become
A Rs. 1,20,000
B Rs. 1,92,000
C Rs. 1,24,000
D Rs. 96,000
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Answer:
Correct option is
B
Rs. 1,92,000
According to the question
After 5 year
12000×(1+R/100?)^5=24000
(1+R/100?)^5=2
After 10 year
(((1+R/100?)^5)^4)=24
(1+R/100?)^20=16
P(1+R/100?)^20
=16×P=16×12000=192000
