A sum of money placed at compound interest doubles itself in $5$ years. It will amount to eight times itself at the same rate of interest in (In $years$)
A sum of money placed at compound interest doubles itself in $5$ years. It will amount to eight times itself at the same rate of interest in (In $years$)
- A
$10$
- B
$20$
- C
$12$
- D
$15$
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