The difference between simple interest on a certain sum at the rate of 6% per annum for 5 years and 6 years is 25.8. What is the sum (in Rs)?
Let the sum be = Rs. $$100x$$
Rate of interest = 6%
=> Simple interest = $$\frac{P\times R\times T}{100}$$
According to ques,
=> $$(\frac{100x\times6\times6}{100})-(\frac{100x\times6\times5}{100})=25.8$$
=> $$36x-30x=25.8$$
=> $$x=\frac{25.8}{6}=4.3$$
$$\therefore$$ Sum = $$100\times4.3=Rs.$$ $$430$$
=> Ans - (B)
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