At what rate percent per annum of compound interest, will a sum of money become four times of itself in two years 1). 100%2). 75%3). 50%4). 20%
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A=P ($1+\frac{R^{T}}{100}$)
4= $1+\frac{R^{2}}{100}$
$1+\frac{R^{}}{100}$= 2
R = 100%
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