If a sum of money at simple interest doubles in 12 years, the rate of interest per annum is

If a sum of money at simple interest doubles in 12 years, the rate of

1.	If a sum of money at simple interest doubles in 12 years, the rate of interest per annum is
A.	<table><tr><td rowspan="2">16</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2">%</td></tr><tr><td style="text-align: center;">3</td></tr></table>
B.	7.5%
C.	<table><tr><td rowspan="2">8</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">%</td></tr><tr><td style="text-align: center;">3</td></tr></table>
D.	10%
Answer» D. 10%

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If a sum of money at simple interest doubles in 12 years, the rate of interest per annum is

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