Find the rate percent per annum,


Find the rate percent per annum, if Rs 2000 amount to Rs 2315.25 in an year and a half, interest being compounded six monthly.


Let the rate percent per annum be $\mathrm{R}$.

Because interest is compounded every six months, n will be 3 for $1.5$ years.










Thus, the required rate is $10 \%$ per annum.

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