Question

Find that principal amount on which the difference
of compound interest for 9 months yearly and
quar-terly is Rs. 18.30 at 20% per annum.
​

Answer 1

Answer:

here is your answer

Step-by-step explanation:

Principal = Rs. 16000; Time = 9 months =3 quarters;

Rate = 20% per annum = 5% per quarter.

Amount = Rs. [16000 x (1+(5/100))3] = Rs. 18522.

CJ. = Rs. (18522 - 16000) = Rs. 2522

l hope it's helpful

Answer 2

Answer:

2400

Step-by-step explanation:

answer=2400

solution= calculate 3 months

r=20% 6 month r=10% 3month r=5% 9 month r=15%

3months CI

so, A=P(1+r/4x100)4n-1

P(1+5/100)4x3/4-1

P(115/100)3-1

P(1.157625-1)

A=P(0.157625)---------------1

1year CI

so, A=P(1+r/100)n-1

P(1+15/100)-1

P(115/100)-1

P(1.15-1)

A=P(0.15)----------------------2

Amount difference = P1-P2

A=0.157625-0.15

A=0.7625

CI difference = 18.30

P=18.30/0.7625X100

P=2400 Answer