1. Due to the annual simple interest rate decreasing from 4% to 3\(\frac{3}{4}\)%, a person's annual income decreases by ₹60. What is that person's principal amount?

2. Due to a decrease in the annual simple interest rate from \(4\%\) to \(3\frac{3}{4}\%\), a person's annual income is reduced by ₹600. Find that person's principal (capital).

3. The annual simple interest rate decreases from \( 4\% \) to \( 3\frac{3}{4}\% \), causing a person's yearly income to reduce by 60 rupees. Find the principal amount of that person.

4. Due to the decrease in the annual simple interest rate from 4% to 3\(\frac{3}{4}\)%, a person's annual income decreases by 60 rupees. What is the principal amount of that person?

5. A person's annual income decreases by ₹60 when the rate of interest drops from 4% to \(3\frac{3}{4}\)% (i.e., 3.75%). Find the principal amount.

6. Due to the annual simple interest rate decreasing from 4% to 3\(\frac{3}{4}\)%, Amal Babu's annual income reduces by ₹60. Determine Amal Babu's principal amount.

7. Due to the annual simple interest rate decreasing from 4% to 3 \(\frac{3}{4}\)% (i.e. 3.75%), Mr. Amal's annual income decreases by ₹60. Calculate Mr. Amal's principal (capital).

8. If the annual simple interest rate decreases from 5.5% to 4.5%, and a person's yearly interest income is reduced by ₹250 as a result, what is the principal amount?

9. Due to the annual simple interest rate decreasing from 6% to 5\(\frac{1}{2}\)%, a person's annual income decreased by 75 rupees. How much money had they deposited in the bank?

10. If the annual simple interest rate increases from 4% to 5%, causing a person's income to rise by ₹1000, then the person's principal amount is _____.

(a) ₹ 4000 (b) ₹ 5000 (c) ₹ 10000 (d) ₹ 50000

11. If the annual simple interest rate increases from 4% to 5%, causing a person's income to rise by ₹1000, then the person's principal amount is _____.

(a) ₹ 4000 (b) ₹ 5000 (c) ₹ 10000 (d) ₹ 50000

12. Due to a decrease in the annual simple interest rate from 4% to 3\(\cfrac{3}{4}\)%, Mr. Amal's annual income is reduced by ₹60. Find Mr. Amal's principal.

13. A farmer deposited some money in the village post office. After 4 years, he found that the total amount including interest had become ₹434. He calculated that the interest he received was \(\frac{6}{25}\) of his principal amount. Find how much money he had originally deposited and what annual rate of simple interest the post office gave.

14. A borrowed ₹960 from B at an annual simple interest rate of 6%, with the condition that the loan will be repaid over the next 4 yearly installments. In the first 3 installments, A will pay only one-fourth of the principal each year. In the final (4th) installment, A will pay the remaining principal along with the total interest accrued over the 4 years. Find the total amount A will pay at the end of the 4th year.

15. My aunt wants to will ₹56,000 between her two sons, aged 13 and 15, in such a way that by the time each turns 18, the total amount (principal + interest) received by both sons is equal. The interest is calculated at an annual simple interest rate of 10%. Determine how much should be allotted to each son in the will.