1. What sum of money must be given as simple interest for six months at 4% per annum in or- der to earn 150 interest?

a. $5000

b. $7500

c. $10000

d. $15000

2. A sum of $1600 gives a simple interest of $252 in 2 years and 3 months. The rate of interest per annum is:

a. 5 1/2%

b. 8%

c. 7%

d. 6%

3. A sum of money lent at simple interest amounts to $880 in 2 years and to $920 in 3 years. The sum of money (in rupees) is

a. 700

B. 760

c. 784

d. 800

4. A lent $5000 to B for 2 years and $3000 to C for 4 years on simple interest at the same rate of interest and received 2200 in all from both as interest. The rate of interest per annum is

a. 7%

b. 5%

c. 7 1/8%

d. 10%

5. What sum of money will amount to 520 in 5 years and to 568 in 7 years at simple interest ?

a. $400

b. $120

c. $510

d. $220

6. $500 was invested at 12% per annum simple interest and a certain sum of money invested at 10% per annum simple interest. If the sum of the interest on both the sum after 4 years is $480, the latter sum of money is :

a. $450

b. $750

c. $600

d. $550

7. A money lender finds that due to fall in the annual rate of interest 8% to 7 3/4 % his capi-tal is

a. $22400

b. $23800

c. $24600

d. $26000

8. A lends $2500 to B and a certain sum to C at the same time at 7% annual simple interest. If after 4 years, A altogether receives $1120 as interest from B and C, the sum lent to C is

a. $700

b. $6500

c. $4000

d. $1500

9. A certain sum of money amounts to $756 in 2 years and to $873 In 3 1/2 year at a certain rate of simple interest. The rate of interest per annum is

a. 10%

b. 11%

c. 12%

d. 13%

10. What sum will amount to $7000 in 5 years at 3 1/3% simple inter-est ?

a. $6300

b. $6500

c. $6000

d. $5000

11. A man took a loan from a bank at the rate of 12% per annum at simple interest. After 3 years he had to pay $5,400 as interest only for the period. The princi- pal amount borrowed by him was :

a. $2000

b. $10000

c. $20000

d. $15000

12. A sum of money lent out at simple interest amounts to $720 after 2 years and to $1020 after a further period of 5 years. The sum is:

a. $500

b. $600

c. $700

d. $710

13. The sum of money, that will give $1 as interest per day at the rate of 5% per annum simple in-terest is

a. $3650

b. $36500

c. $730

d. $7300

14. What annual instalment will dis- charge a debt of $6450 due in 4 years at 5% simple interest ?

a. $1500

b. $1835

c. $1935

d. $1950

15. The simple interest on $7,300 from 11 May, 1987 to 10 Sep- tember, 1987 (both days in- cluded) at 5% per annum is

a. $123

b. $103.

c. $200

d. $223

16. A man had $16,000, part of which he lent at 4% and the rest at 5% per annum simple inter- est. If the total interest received was 700 in one year, the money lent at 4% per annum was

a. $12000

b. $8000

c. $10000

d. $6000

17. A sum of money amounts to 5,200 in 5 years and to $5,680 in 7 years at simple interest. The rate of interest per annum is

a. 3%

b. 4%

c. 5%

d. 6%

18. A person deposited $400 for 2 years, $550 for 4 years and $1,200 for 6 years. He received the total simple interest of $1,020. The rate of interest per annum is

a. 10%

b. 5%

c. 15%

d. 20%

19. Manoj deposited $29400 for 6 years at a simple interest. He got $4200 as interest after 6 years. The annual rate of interest was

a. 2 8/21%

b. 2 7/20%

c. 3 8/21%

d. 4 8/11%

20. A man lent $60,000, partly at 5% and the rest at 4% simple interest. If the total annual inter- est is 2560, the money lent at 4% was

a. $40000

b. $44000

c. $30000

d. $45000

21. A sum of money at some rate of simple interest amounts to 2,900 in 8 years and to 3,000 in 10 years. The rate of interest per annum is

a. 4%

b. 2 1/2%

c. 3%

d. 2%

22. In how many years will a sum of $3,000 yield a simple interest of $1,080 at 12% per annum?

a. 3 years

b. 2 1/2 years

c. 2 years

d. 3 1/2 years

23. A sum of money amounts to $850 in 3 years and to $925 in 4 years at some rate of simple interest. The sum is :

a. $550

b. $600

c. $625

d. $700

24. In what time will $1,860 amount to 2,641.20 at simple interest 12% per annum ?

a. 3 years

b. 3 1/2 years

c. 4 years

d. 4 1/2 years

25. The population of a village de- creases at the rate of 20% per annum. If its population 2 years ago was 10,000, the present pop-ulation is

a. 4600

b. 6400

c. 7600

d. 6000

26. If a sum of money amounts to $12,900 and $14,250 at the end of 4th year and 5th year respec- tively at a certain rate of simple interest, then the rate of interest is

a. 10%

b. 12%

c. 18%

d. 20%

27. In what time will $8,000, at 3% per annum, produce the same interest as $6, 000 does in 5 years at 4 % simple interest ?

a. 5 years

b. 6 years

c. 3 years

d. 4 years

28. A sum of money lent out at sim- ple interest amounts to Rs. 720 after 2 years and Rs. 1020 after a further period of 5 years. Find the principal.

a. Rs. 600

b. Rs. 1740

c. Rs 6000

d. Rs 120

29. If a sum of money becomes Rs. 4000 in 2 years and Rs. 5500 in 4 years 6 months at the same rate of simple interest per annum, then the rate of sim- ple interest is

a. 21 3/7%

b. 21 2/7%

c. 21 1/7%

d. 21 5/7%

30. The simple interest on a certain sum of money at the rate of 5% per annum for 8 years is Rs. 840. Rate of interest for which the same amount of interest can be received on the same sum after 5 years is :

a. 7% per annum

b. 8% per annum

c. 9% per annum

d. 10% per annum