If a certain sum is doubled in 8 yr on simple interest, in how many year will it be four times?

If a certain sum is doubled in 8 yr on simple interest, in how many ye

1.	If a certain sum is doubled in 8 yr on simple interest, in how many year will it be four times?
A.	24 yr
B.	16 yr
C.	32 yr
D.	12 yr
Answer» B. 16 yr

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If a certain sum is doubled in 8 yr on simple interest, in how many year will it be four times?

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