A sum of money amounts to Rs.4,840 in 2 years and to Rs.5,324 in 3 years at compound interest compounds of interest per annum is
1). 10%
2). 9%
3). 11%
4). 8%
.Here, b – a = 3 – 2 = 1
B = Rs 5,324, A = 4,840
R% =($\frac{B}{A}-1\times100$%)
$\frac{5324-4840}{4840}\times100$%
= 10%
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