If a certain sum of money becomes doubles at simple interest in 12 years, what would be the rate of interest per annum?
A. $$8\frac{1}{3}$$
B. 10
C. 12
D. 14
Answer: Option A
Solution(By Examveda Team)
Let, Principal, P = Rs. 100; Amount, A = Rs. 200; Time = 12 years; Interest = Rs. 100; Rate of interest$$\eqalign{ & = \frac{{{\text{Total Interest}}}}{{{\text{Given Time}}}} \cr & = \frac{{100}}{{12}} \cr & = 8\frac{1}{3}\% \cr} $$
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