a man borrowed a sum of 80000 at a rate of 10 percent

Question : A man borrowed a certain sum of money at the rate of 10% per annum simple interest for the first three years and 15% per annum simple interest for the period beyond three years. If he pays a total interest of INR 2,884.50 at the end of 7 years, then the sum of money (in INR) that he borrowed is:

Option 1: 3,860

Option 2: 3,090

Option 3: 4,550

Option 4: 3,205

Question : A person invested a total sum of Rs. 15,500 in three schemes of simple interest at the annual rate of 4 percent, 6 percent, and 10 percent. At the end of one year, he got the same interest in all three schemes. What is the sum invested at the rate of 6 percent?

Option 1: Rs. 5400

Option 2: Rs. 5000

Option 3: Rs. 5500

Option 4: Rs. 6500

Question : Priya borrowed a certain sum at the rate of 12% per annum. If she paid INR 10176 at the end of 2 years as interest compounded annually, what was the sum she borrowed?

Option 1: INR 30000

Option 2: INR 20000

Option 3: INR 50000

Option 4: INR 40000