In what time will Rs. 15000, at 4% per annum, produce the same interest as Rs.6000 does in 5 years at 8% simple interest?

Let the time be t years According to the question, (15000×4×t)/100 = (6000 ×5 ×8)/100 60t = 240 t = 4years

- A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs. 2700 after 3 years. If the same amount is invested at 20% per annum compound interest, compounded annually for two years then the interest would be:
- Rs. 9000 is invested in scheme ‘A’ for 2 years and Rs. 7500 is invested in scheme ‘B’ for 2 years. Scheme ‘A’ offers simple interest of 10% p.a. If the interest received from both the schemes are equal, then find the rate of simple interest (p.a.) offered by scheme ‘B’.
- Vishal has certain sum of money with him. He invested 80% of the sum in scheme ‘X’ offering 15% p.a. simple interest for 8 years and received Rs. 2760 as interest. He then invested the amount received from scheme ‘X’ in scheme ‘Y’ for 2 years at 50% p.a., compound interest compounded annually. Find the amount received by Vishal from scheme B.
- The simple interest accrued in five years on a principal of Rs. 50,000 is one – tenth of the principal. What is the rate of simple interest p.a.?
- Rs. 25200 is invested in 3 parts in such a way that Simple Interest on 1st Part at 4% per annum for 3 years, Simple Interest on 2nd part at 6% per annum for 4 years and Simple Interest on 3rd Part at 8% per annum for 5 years are equal. Find each part.
- The simple interest received on a certain sum is Rs. 4500 less than the sum invested. If the sum was invested at 5% p.a. for 15 years, then find the simple interest received.
- A sum of money triples itself in 12 years. Find the rate percent per annum.
- The difference between compound and simple interest on a sum of money for 2 years at 4% per annum is Rs. 626. The sum is:
- The interest received by investing Rs. 4000 for 2 years at compound interest of 20% p.a., compounded annually, was re-invested for 3 years at simple interest of 25% p.a. Find the simple interest received.
- The difference between the simple interest received from two different sources on Rs.12000 for 1.5 years is Rs. 720. What is the difference between their rates of interest?

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