Person A borrows Rs. 4000 from another person B for a duration of 4 years. He borrows a portion of it at 3% simple interest per annum, while the rest at 4% simple interest per annum. If B gets Rs. 520 as total interest, then the amount A borrowed at 3% per annum in Rs. is:

Assume it is the beginning of the year today. Ankita will earn INR 10,000 at the end of the year, which she plans to invest in a bank deposit immediately at a fixed simple interest of 0.5% per annum. Her yearly income will increase by INR 10,000 every year, and the fixed simple interest offered by the bank on new deposits will also increase by 0.5% per annum every year. If Ankita continues to invest all her yearly income in new bank deposits at the end of each year, the total interest earned by her, in INR, in five years from today will be

If the difference between compound interest and simple interest for a certain amount of money invested for $3$ years at an annual interest rate of $10\%$ is INR $527$, then the amount invested in INR is

Sagarika divides her savings of $10000$ rupees to invest across two schemes A and B. Scheme A offers an interest rate of $10\%$ per annum, compounded half-yearly, while scheme B offers a simple interest rate of $12\%$ per annum. If at the end of first year, the value of her investment in scheme B exceeds the value of her investment in scheme A by $2310$ rupees, then the total interest, in rupees, earned by Sagarika during the first year of investment is

If the compound interest earned on a certain sum for 2 years is twice the amount of simple interest for 2 years, then the rate of interest per annum is _______ percent

Anindita invests a total of $1$ lakh rupees distributed across three schemes A, B and C for a period of two years. These schemes offer an interest rate of $10\%$, $8\%$ and $12\%$ per annum, respectively, each compounded annually. If the initial investment amount in scheme A is $30000$ rupees and the total interest earned from all the three schemes during the first year is $10600$ rupees, then the total interest earned, in rupees, from all the three schemes for the second year is

Savitri borrowed 10000 rupees from a bank for a period of two years at a fixed interest rate of 10% per annum, compounded semi-annually, and paid back 5025 rupees at the end of first year. Then, the amount, in rupees, to be paid at the end of second year is ___