Ravi borrowed some money at the rate of 5% per annum for the first three years. 8% per anmmm for the next two years. and 10% per annum for the period beyond 5 years. If he paid a total simple interest of Rs. 12,750 at the end of 7 years. then how much money did he borrow?

Correct option is A

Given:
Rate for the first 3 years = 5% per annum
Rate for the next 2 years = 8% per annum
Rate for the period beyond 5 years = 10% per annum
Total Simple Interest (SI) = Rs. 12,750
Time = 7 years
Formula Used:
$$\text{Simple Interest (SI)} = \frac{\text{Principal (P)} \times \text{Rate (R)} \times \text{Time (T)}}{100}$$​​
Solution: