If a sum of money doubles itself in 8 yrs, thenÂ the interest rate i

1.	If a sum of money doubles itself in 8 yrs, thenÂ the interest rate in percentage is ?
A.	8 1â„2%
B.	0.1
C.	10 1â„2 %
D.	12 1â„2 %
Answer» E.

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