A certain sum of money at compound interest grows up to ₹ $12960$ in $2$ years and up to ₹ $13176$ in $3$ years. Find the rate per cent per annum.
A certain sum of money at compound interest grows up to ₹ $12960$ in $2$ years and up to ₹ $13176$ in $3$ years. Find the rate per cent per annum.
- A
$1 \frac{1}{3}$
- B
$2 \frac{1}{3}$
- C
$1 \frac{2}{3}$
- D
None of these
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