A certain sum of money lent out at a certain rate of interest per annum, doubles itself in 10 years. In how many years will it triple itself?

A certain sum of money lent out at a certain rate of interest per an

1.	A certain sum of money lent out at a certain rate of interest per annum, doubles itself in 10 years. In how many years will it triple itself?
A.	20 years
B.	16 years
C.	12 years
D.	10 years
Answer» B. 16 years

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A certain sum of money lent out at a certain rate of interest per annum, doubles itself in 10 years. In how many years will it triple itself?

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