- Shankar borrowed Rs. 7,200 at simple interest and repaid an amount of Rs. 9,504 after 7 years. If the interest rate p.a charged for first 4 years was 5% p.a., find the interest rate p.a. charged for the last 3 years.
- The simple interest received on a certain sum is Rs. 500 less than the sum invested. If the sum was invested at 10% p.a. for 6 years, then find the simple interest received.
- 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.
- 1000 rupees is invested in a scheme p.a. simple interest. Another amount (1000 – x) is invested in scheme B at 2R% p.a. simple interest. After 5 years, interest earned from scheme A is 20% less than that of scheme B. Find x.
- A took a loan of Rs.5410 at simple interest of 20% p.a. and invested the same money in a scheme at simple interest of 30% p.a. Find the profit earned by A at the end of 2 years.
- Some amount out of Rs. 24000 was lent out at 10% per annum and the rest amount @ 16% per annum and thus in 5 years the total interest from both the amount collected was Rs. 14400. What is the amount which was lent out at 10% per annum?
- A man deposited Rs. 7000 at 10% compound interest, compounded annually while Rs. 6500 at 13% simple interest per annum. What will be the difference between the compound interest and the simple interest earned by him after 3 years?
- Difference between CI and SI on a sum for 3 year at 20% p.a. is 176. Find the simple interest on the sum after 2 years at 10% p.a.
- The interest earned by Veer at SI is 24% of the sum invested. If he had invested for 4 years more, then interest received is 150% more than that of earlier. What is the rate of interest?
- Ajay invested Rs.a in SI at 7% rate of interest per annum for 9 years. Vishal invested the same amount in SI at 5% rate of interest per annum for 3 years and the difference between the interest obtained by Ajay and Vishal is Rs.2400. Find the amount invested by Vishal.

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