Question

find the compound interest for rupees 8000 at 8% per annum for one year the interest is compounded semiannually

Answer 1

for finding semiannually
divide rate by 2 and multiply time by 2

8%/2=4%
1*2=2 years

now,
principal=8000
rate=4%
time=2 years

now to solve
SI=P*R*T/100

SI=8000*4*1/100=320
first year interest=320

P2=8000+320=8320

I=8320*4*1/100
=332.8

total compound interest=320+332.8=

652.8 rs