Question : On a certain sum, the difference between compound interest and simple interest at 10% per annum for 2 years is Rs.250. The sum is _________.

Option 1: Rs.25,450

Option 2: Rs.26,550

Option 3: Rs.25,000

Option 4: Rs.26,000

Question : Find the difference between the simple interest and the compound interest payable annually on a sum of Rs. 6,500 at 7% per annum for 3 years. (Correct to two decimal places.)

Option 1: Rs. 94.34

Option 2: Rs. 97.78

Option 3: Rs. 98.73

Option 4: Rs. 95.67

Question : Rekha invested a sum of Rs. 12000 at 5% per annum compound interest. She received an amount of Rs. 13230 after $n$ years. Find $n$.

Option 1: 2.8 years

Option 2: 3 years

Option 3: 2.5 years

Option 4: 2 years

Question : What is the difference (in Rs.) between the compound interest and simple interest for 3 years on a Principal of Rs.1000 at 20% per annum?

Option 1: Rs. 64

Option 2: Rs. 120

Option 3: Rs. 128

Option 4: Rs. 136

Question : A certain sum (in INR) is invested at simple interest at y% per annum for $3 \frac{1}{2}$ years. Had it been invested at (y + 4)% per annum at simple interest, it would have fetched INR 4,452 more as interest. What is the sum?

Option 1: INR 42,400

Option 2: INR 31,800

Option 3: INR 30,400

Option 4: INR 42,800