Question

in how many years ₹45 000 yield an interest of ₹16,200 rs 9% per annum? also find the amount to be paid at the end of the period​

Answer 1

Answer:

Principal = Rs.32000

Amount =Rs.(32000+5044)=Rs.37044

Rate =r% p.a. or

4

r

% per quarter

Time = 9 months = 3 quarters i.e., n=3

∴ Applying A=P(1+

100

r

)

n

we have

37044=32000(1+

400

r

)

3

⇒

32000

37044

=(1+

400

r

)

3

⇒

8000

9261

=(1+

400

r

)

3

⇒(

20

21

)

3

=(1+

400

r

)

3

⇒1+

400

r

=

20

21

⇒

400

r

=

20

21

−1=

20

1

⇒r=

20

400

=20%p.a.

Step-by-step explanation:

hope this will help you