At the certain rate of simple interest, a certain sum doubles itself in 10 years. It will treble itself in ?

At the certain rate of simple interest, a certain sum doubles itself i

1.	At the certain rate of simple interest, a certain sum doubles itself in 10 years. It will treble itself in ?
A.	15 years
B.	20 years
C.	30 years
D.	12 years
Answer» C. 30 years

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At the certain rate of simple interest, a certain sum doubles itself in 10 years. It will treble itself in ?

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