The simple interest on a certain sum of money at $12\%$ per annum for $3$ years is Rs. $3600$ less than the simple interest on the same sum at $15\%$ per annum for $4$ years. Find the sum.
Options:
- A: Rs. 15000
- B: Rs. 20000
- C: Rs. 25000
- D: Rs. 30000
Related Practice Questions:
- A sum of ₹4000 is invested at compound interest for 2 years at a rate of 10% per annum. What will be the total amount at the end of 2 years?
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- The difference between the compound interest and simple interest on a certain sum of money for 2 years at 5% per annum is ₹25. Find the sum.
- The study of living organism :
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