Q1. Two friends together took a loan amount of ₹ 15,000 to run a business from a bank at the rate of simple interest of 12% per annum. Let us write, by calculating, the interest they have to pay after 4yrs.

Q2. Let us determine the interest of ₹ 2000 at the rate of simple interest of 6% per annum from 1^{st} January to 26^{th} May, 2005.

Q3. Let us determine the amount (Principal among with interest) of ₹ 960 at the rate of simple interest of 8 1/3 % annum for 1yr 3 months.

Q4. Utpalbabu took a loan of ₹ 3200 for 2yrs from a Cooperative bank for the cultivation of his land at the rate of simple interest of 6% per annum. Let us write by calculating, the amount he has to repay after 2yrs.

Q5. Soyadevi deposited some amount of money in a bank at the rate of simple interest of 5.25% per annum. After 2yrs she has got ₹ 840 as interest. Let us write by calculating the money she has deposited in the bank.

Q6. Goutam took a loan of some money from a Cooperative bank for opening a poultry farm at the rate of simple interest of 12 % per annum. Every month he has to repay ₹ 378 as interest. Let us determine the loan amount taken by him.

Q7. Let us write by calculating, the number of years for which an amount become twice of its principal having the rate of simple interest of 6% per annum.

Q8. Mannan Miyan observed, after 6 years of taking a loan of some money, that the interest to be paid had become 3/8^{th} of its principal. Let us determine the rate of simple interest in percent per annum.

Q9. An agriculture Co-operative society gives agricultural loan to its member at the rate of simple interest of 4% per annum. But an interest is to be gives at the rate of simple interest of 7.4% per annum for a loan taken from the bank. If a farmer being a number of the Co-operative society takes a loan of ₹ 5000 from lit instead of taking loan from the bank, then let us write, by calculating the money to be saved as interest per annum.

Q10. If the interest of ₹ 292 in 1 day be 5 paise, then let us write by calculating, the rate of simple interest in percent per annum.

Q11. Let us write by calculating the number of yrs for which the interest of ₹ 600 at the ratio of simple interest of 8% per annum will be ₹168.

Q12. If II het ₹ 1200 return as amount (principal along with interest) by depositing ₹ 800 in the bank at the rate of simple interest of 10% per annum, then let us write by calculating, the time for which the money was deposited in the bank.

Q13. At the rate of simple interest in percent per annum, if a principal becomes the amount of ₹ 7100 in 7 years and of ₹ 6200 in 4 years, let us determine the principal and rate of simple interest in percent per annum.

Q14. Amal Roy deposit ₹ 2000 in the bank and Pushupoti Ghosh deposits ₹ 2000 in the post office at the same time. After 3yrs they get the return amounts ₹ 2360 and ₹ 2480 respectively. Let us write by calculating, the ratio of the rate of simple interest in percent per annum in the bank and that of in the post office.

Q15. A weaver Cooperative society takes loan of ₹ 15,000 at the tone of buying a power loom. After 5yrs, the society has to repay ₹22125 for recovering the loan. Let us determine the rate of simple interest in percent per annum.

Q16. Aslamchachagot got ₹ 1,00,000 when he retired from hi service. He deposited some of that money in the bank and rest of his money in the pot office and got ₹ 5400 in total per year as interest. If the rates of simple interest per annum in the bank and in the post, office are 5% and 6% respectively, then let us write by calculating, the money he had deposited in the bank and post office.

Q17. Rekhadidi deposited ₹ 10,000 of her savings in two separate banks at the same time. The rate of simple interest per annum is of 6% in one bank and that of 7% in other bank; After 2yrs, if she gets ₹1280 in total as interest, then let us write by calculating, the money she had deposited separately in each of two banks.

Q18. A bank gives 5% simple interest per annum. In that bank, Dipubabu deposits ₹ 15,000 at the beginning of the year, but withdraws ₹ 3000 after 3 months and then again, after 3 month he deposits ₹ 8000. Let u determine the amount (Principal along with interest) Dipubaba will get at the end of the year.

Q19. Rahamatchacha takes a loan amount of ₹ 2,40,000 from a bank of for construction a building at the rate of simple interest of 12% per annum. After 1yr, of taking the loan he rents the house at the rate of ₹ 5200 per month. Let us determine the number of yrs, he would take to repay his loan with interest from the income of the business.

Q20. Rothinbabu deposits the money for each of his two daughters in such a way that when the ages of each of his daughters will be 18yrs, each one will get ₹ 1,29,000. The rate of simple interest per annum in the bank is 10% and the present ages of his daughters are 13yrs, and 8yrs, respectively. Let us determine the money, he had deposited separately in the bank for each of his daughters.