Govind borrows ₹ 18000 at 10% simple interest. He immediately invests the money at 10% compound interest compounded half-yearly. How much money does Govind gain in one year ?

Find the compound interest on ₹ 4000 accrued in three years, when the rate of interest is 8% for the first year and 10% per year for the second and the third years.

₹ 2000 is saved during the year 2022 and deposited in a bank at the beginning of year 2023 at 8% compound interest. During 2023, ₹ 3000 more is saved and deposited in the same bank at the beginning of 2024 and at the same rate of interest. The C.I. earned upto the end of 2024 is :

1. ₹ 560

2. ₹ 572.80

3. ₹ 5400

4. ₹ 400

₹ 1000 is borrowed at 10% per annum C.I. If ₹ 300 is repaid at the end of each year, the amount of loan outstanding at the end of 2nd year is :

1. ₹ 880

2. ₹ 610

3. ₹ 580

4. ₹ 484