Simple Interest - A sum was put at simple interest at a certain rate for 2 years. Had it been put at 3 % higher rate, it whould have fetched Rs ... calculator

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Simple Interest

9. A sum was put at simple interest at a certain rate for 2 years. Had it been put at 3 % higher rate, it whould have fetched Rs 300 more. Find the sum.

Let sum = Rs `X` and original rate = `R` %

Then, `(X * ( R + 3 ) * 2)/100 - (X * R * 2)/100 = 300`