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On a certain sum and on a certain rate percent ,the S.I.for first year is Rs. 270 and the C.I. for the first two years is Rs. 580.50.Find the sum and rate

I hope u Would Have Noticed That CI and SI for the First Year are same Therefore CI for the First Year = 270 So CI for the second year = 580.50 - 270.00 = 310.50 So Applying the formula Rate = ( CI for the Second Year - CI for the First Year) * 100 ___________________________________________ CI for the First Year [Note: This Formula Only is Applicable For consecutive years]

So now Rate =(310.50 - 270)*100 --------------------------- 270 Rate =40.50 * 100 --------------- 270

Rate =4050 ------- 270

Rate = 15%

So now, SI = PRT ------- 100 270=P*15*1 ----------- 100 P = 270 * 100 ------------ 15 * 1 P = 27000 ----------- 15

P = Rs 1800

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