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  3. By using formula,find compound interest and amount Principle RS 6400Rate of interest 12%Time period 2 year formula A = p(1+r*100) N
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By using formula,find compound interest and amount Principle RS 6400Rate of interest 12%Time period 2 year formula A = p(1+r*100) N

Answers (1)
D Deependra Verma

Here, P = Rs 6400

         R = 12%

         T = 2 years

then compound interest , 

                                           $$ P (1 + fracR100)^T - P $$\$$ $$ C.I = P[(1 + fracR100)^T - 1] $$\$$ $$ C.I = 6400 [ (1 + frac12100)^2 - 1] $$\$$ $$ C.I = 6400 [(1.12)^2 - 1]$$\$$ $$ C.I = 6400 [1.2544 -1]$$\$$ $$ C.I = 6400 imes .2544 $$\$$ $$ C.I = Rs. 1628.16 $$

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