Question

Kala invested Rs. 12,000 in a business. She will be paid an interest at 10 % per

annum compounded annually. Find the Amount and C I credited against her

name after 3 years.​

Answer 1

Answer:

interest on capital.

=12000×10÷100

=1200

=1200×3

=3600

Answer 2

Here P = Rs.12000 R = 10% per annum and n = 3

∴ Amount after 3 years = P(1+ 100R ) 3 =Rs12000×(1+ 10010)3

=Rs.12000×(1+ 101 ) 3

=Rs.12000×( 10

11

Here P = Rs.12000 R = 10% per annum and n = 3

∴ Amount after 3 years = P(1+ 100R ) =Rs12000×(1+ 10010 ) 3

=Rs.12000×(1+ 101 ) 3

=Rs.12000×( 1011 ) 3

=Rs.12000× 1011 × 1011× 1011

=Rs.(12×11×11×11)=Rs.15972

Now Compound interest = A - P ⇒ Compound interest = Rs. 15972 - Rs.12000 = Rs. 3972 )3

=Rs.12000× 1011 × 1011 × 1011

=Rs.(12×11×11×11)=Rs.15972

Now Compound interest = A - P ⇒ Compound interest = Rs. 15972 - Rs.12000 = Rs. 3972