Question

find the amount and the compound interest on rupees 20000 for one 1 by 2 years at the rate of 8% per annum compounded half yearly .

​

Answer 1

Answer:

Here

P=

20,000

Rs.,

n=

3

years,

R=

8

Amount (A)=

P

(1+

100

R

)

n

=

20000

(1+

100

8

)

3

=

20000

(

25

27

)

3

=

25×25×25

20000×(27)

3

=

25

32×(27)

3

=

25,194.24

Rs.

Compound interest

(C.I)=

A−

P=

25,194.24−

20,000=

5,194.24

Hence, the compound interest is Rs. 5,

Answer 2

Answer:

Here

P=

20,000

Rs.,

n=

3

years,

R=

8

Amount (A)=

P

(1+

100

R

)

n

=

20000

(1+

100

8

)

3

=

20000

(

25

27

)

3

=

25×25×25

20000×(27)

3

=

25

32×(27)

3

=

25,194.24

Rs.

Compound interest

(C.I)=

A−

P=

25,194.24−

20,000=

5,194.24

Hence, the compound interest is Rs. 5,