1. Find compound interest on Rs. 7500 at
4% per annum for 2 years, compounded annually. Ans:
612

2. Find compound interest on Rs. 8000 at
15% per annum for 2 years 4 months, compounded annually. Ans:
3109

3. Find the compound interest on Rs.
10,000 in 2 years at 4% per annum, the interest being compounded half-yearly Ans:
824.32

4. Find the compound interest on Rs.
16,000 at 20% per annum for 9 months, compounded quarterly. Ans:
2522

5. If the simple interest on a sum of
money at 5% per annum for 3 years is Rs. 1200, find the compound interest on
the same sum for the same period at the same rate.Ans:1261

6. In what time will Rs. 1000 become Rs.
1331 at 10% per annum compounded annually?3

7. If Rs. 600 amounts to Rs. 683.20 in
two years compounded annually, find the rate of interest per annum. Ans: 8

8. If the compound interest on a certain
sum at 16 2/3% to 3 years is Rs.1270, find the simple interest on the same sum
at the same rate and f or the same period. Ans: 1080

9. The difference between the compound
interest and simple interest on a certain sum at 10% per annum for 2 years is
Rs. 631. Find the sum. Ans:
63100

10.
The
difference between the compound interest and the simple interest accrued on an
amount of Rs. 18,000 in 2 years was Rs. 405. What was the rate of interest
p.c.p.a? 15%

11.
Divide
Rs. 1301 between A and B, so that the amount of A after 7 years is equal to the
amount of B after 9 years, the interest being compounded at 4% per annum.
676&625

12.
A
certain sum amounts to rs.7350 in 2 years and to rs.8575 in 3 years. Find the
sum and rate percent. Ans:
5400

13.
A
sum of money amounts to rs.6690 after 3 years and to rs.10,035 after 6 years on
compound interest. Find the sum. Ans:
4460

14.
A
sum of money doubles itself at compound interest in 15 years. In how many years
will it become eight times? Ans:
45

15.
What
annual payment will discharge a debt of Rs.7620 due in 3years at 16 2/3% per
annum interest? Ans:
3430

16.
Albert
invested an amount of Rs. 8000 in a fixed deposit scheme for 2 years at
compound interest rate 5 p.c.p.a. How much amount will Albert get on maturity
of the fixed deposit? Ans:
None

17.
What
will be the compound interest on a sum of Rs. 25,000 after 3 years at the rate
of 12 p.c.p.a? Ans:
10123.2

18.
The
compound interest on Rs. 20,480 at 6 ¼ per annum for 2 years 73 days, is : 2929

19.
A
man saves Rs. 200 at the end of each year and lends the money at 5% compound
interest. How much will it become at the end of 3 years? Ans: 662.02

20.
Sam
invested Rs. 15,000 @ 10% per annum for one year. If the interest is compounded
half - yearly, then the amount received by Sam at the end of the year will be :
16537.5

21.
A
bank offers 5% compound interest calculated on half-yearly basis. A customer
deposits Rs. 1600 each on 1st January and 1st July of a year. At the end of the
year, the amount he would have gained by way of interest is Ans: 121

22.
What
is the difference between the compound interests on Rs. 5000 for 1 ½ years at
4% per annum compounded yearly and half - yearly? Ans: 2.04

23.
Find
the compound interest on Rs. 15,625 for 9 months at 16% per annum compounded
quarterly. Ans:
1951

24.
If
the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50,
what is the compound interest on the same sum at the same rate and for the same
time? 51.25

25.
What
will be the difference between simple and compound interest @ 10% per annum on
a sum of Rs. 1000 after 4 years? Ans:
64.10

26.
The
difference between simple interest and compound interest on Rs. 1200 for one year
at 10% per - annum reckoned half - yearly is : Ans:
3

27.
The
compound interest on Rs. 30,000 at 7% per annum is Rs. 4347. The period (in
years) is : Ans:
2

28.
At
what rate of compound interest per annum will a sum of Rs. 1200 become Rs.
1348.32 in 2 years? Ans:
6

29.
The
principal that amounts to Rs. 4913 in 3 years at 6 ¼ % per annum compound
interest compounded annually, is : Ans:
4096

30.
The
present worth of Rs.169 due in 2 years at 4% per annum compound interest is:

31.
In
how many years will a sum of Rs. 800 at 10% per annum compounded semiannually
become Rs. 926.10? Ans:
1 ½

32.
If
the compound interest on a sum for 2 years at 12 ½% per annum is Rs. 510, the
simple interest on the same sum at the same rate for the same period of time is
: Ans: 480

33.
The
compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The
simple interest on the same sum for double the time at half the rate percent
per annum is: Ans:
500

34.
The
simple interest on a certain sum of money for 3 years at 8% per annum is half
the compound interest on Rs. 4000 for 2 years at 10% per annum. The sum placed
on simple interest is : Ans:
1750

35.
There
is 60% increase in an amount in 6 years at simple interest. What will be the
compound interest of Rs. 12,000 after 3 years at the same rate? Ans: 3972

36.
The
difference between compound, interest and simple interest on an amount of Rs.
15,000 for 2 years is Rs. 96. What is the rate of interest per annum? Ans: 8

37.
The
difference between simple and compound interests compounded annually on a
certain sum of money for 2 years at 4% per annum is Re. 1. The sum (in Rs.) is:
625

38.
The
compound interest on a sum of money for 2 years is Rs. 832 and the simple
interest on the same sum for the same period is Rs. 800. The difference between
the compound interest and the simple interest for 3 years will be: Ans:
98.56

39.
The
difference between the simple interest on a certain sum at the rate of 10% per
annum for 2 years and compound interest which is compounded every 6 months is
Rs. 124.05. What is the principal sum? Ans:
8000

40.
The
difference between compound interest and simple interest on a sum for 2 years
at 10% per annum, when the interest is compounded annually is Rs. 16. If the
interest were compounded half - yearly, the difference in two interests would
be: Ans: 24.81

41.
A
sum of money lent at compound interest for 2 years at 20% per annum would fetch
Rs. 482 more, if the interest was payable half - yearly than if it was payable
annually. The sum is: Ans:
20,000

42.
On
a sum of money, the simple interest for 2 years is Rs. 660, while the compound
interest is Rs. 696.30, the rate of interest being the same in both the cases.
The rate of interest is:

43.
The
effective annual rate of interest corresponding to a nominal rate of 6% per
annum payable half - yearly is : Ans:
6.09

44.
A
person lent out a certain sum on simple interest and the same sum on compound
interest at a certain rate of interest per annum. He noticed that the ratio
between the difference of compound interest and simple interest of 3 years and
that of 2 years is 25 : 8. The rate of
interest per annum is: Ans:
12 ½

45.
Mr.
Dua invested money in two schemes A and B offering compound interest @ 8,
p.c.p.a. and 9 p.c.p.a respectively. If the total amount of interest accrued
through two schemes together in two years was Rs. 4818.30 and the total amount
invested was Rs. 27,000, what was the amount invested in Scheme A ? Ans: 12000

46.
A
sum of money invested at compound interest amounts to Rs. 800 in 3 years and
to-Rs. 840 in 4 years. The rate of interest per annum is: Ans:
5

47.
A
sum of money invested at compound interest amounts to Rs. 4624 in 2 years and
to Rs. 4913 in 3 years. The sum of money is: Ans:
4096

48.
A
sum of money becomes Rs. 13,380 after 3 years and Rs. 20,070 after 6 years on
compound interest. The sum is: Ans:
8920

49.
A
sum of Rs. 12,000 deposited at compound interest becomes double after 5 years.
After 20 years, it will become: Ans:
19200

50.
A
sum of money placed at compound interest doubles itself in 5 years. It will
amount to eight times itself at the same rate of interest in: Ans: 15

51.
If
a sum on compound interest becomes three times in 4 years, then with the same
interest rate, the sum will become 27 times in : Ans: 12

52.
The
least number of complete years in which a sum of money put out at 20% compound
interest will be more than doubled is : Ans:
4

53.
A
man borrows Rs. 2550 to be paid back with compound interest at the rate of 4%
per annum by the end of 2 years in two equal yearly installments. How much will
each installment be? Ans:
1352

54.
What
annual payment will discharge a debt of Rs. 1025 due in 2 years at the rate of
5% compound interest? Ans:
551.25

55.
A
man borrows Rs. 12,500 at 20% compound interest. At the end of every year he
pays Rs. 2000 as part repayment. How much does he still owe after three such installments?

56.
A
sum of money is borrowed and paid back in two annual installments of Rs. 882
each allowing 5% compound interest. The sum borrowed was: Ans: 1640