If a sum of money trebles itself in 40 years,what is the rate of in

1.	If a sum of money trebles itself in 40 years,what is the rate of interest?
A.	5%
B.	6%
C.	4%
D.	None of these
Answer» B. 6%

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If a sum of money trebles itself in 40 years,what is the rate of interest?

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