A sum of money becomes double in 3 years at compound interest compound – McqOptions

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1.	A sum of money becomes double in 3 years at compound interest compounded annually. At the same rate, in how many years will it become four times of itself ?
A.	4 years
B.	6 years
C.	6.4 years
D.	7.5 years
Answer» C. 6.4 years

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