Question

100

Answer 1

Answer:

100

103

= 20000

103

21218.

100 100

CI.

= (Amount)- (Principal)

=(21218 - 20000) = 1218.

Hence, the required compound interest is 1218.

Find the compound interest on 3128000 for 9 months at 10% per annum, compounded

quarterly.

Here, P=128000, R =

% per quarter

4

2

and n = 9 months = 3 quarters.

Sample 4.

Solution :

10

per quarter

Amount = 128000 x 1+

5

2 x 100

x(1

41

128000 x

40

41

41

40

40

40

=137842

C.I. = (Amount) - (Principal)

= *(137842 - 128000) = 9842.

Hence, the required compound interest is * 9842.

EXERCISE 8 D

1. Find the amount and the compound interest on 120000 at 8% per annum for 1 year, compoun

half-yearly