Hema invested Rs. 1,728 at the rate of compound interest (Compounded annually) for 3 years. She got Rs. 4,096 after the specified period. Find the rate of interest per annum.

Correct option is C

Amount = Principal  $$(1+ \frac{R}{100})^T$$​

4096 = 1728$$(1+\frac{R}{100})^3$$

$$\frac{4096}{1728} = (1+ \frac{R}{100})^3$$ 

​$$\frac{4}{3} -1 = \frac{R}{100}$$

R= 33$$\frac{1}{3}$$​%