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A sum of money triples itself at 8% per annum over certain time. The number of years is equal to

24
25
20
12
Explanation:

n=3 times

$N=\dfrac{(n-1)\times100)}{R}$

$ =\dfrac{(3-1)\times100}{8}$

$ =\dfrac{200}{8}$

$ =25 years$

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