A) 25 yr
B) 20 yr
C) 15 yr
D) 10 yr
Correct Answer: C
Solution :
[c] Sum of money at compound interest becomes 2 times in 5 yr. \[\therefore \] It will become 8 times i.e. \[{{(2)}^{3}}\] times in \[5\times 3=15\,yr\] |
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