Question

please help me compound interest the answer is rs.21​

Answer 1

for Annually

Amount for CI=p(1+r/100)^n
8000×[(1+1/10)^2×3/2]-1
=₹9240
CI= A-
9240-8000
=₹1240

Semi annually

T=1*1/2 years
= 3 time periods
R=10/2=5%

8000(1+5/100)^3
=9261

CI=9261-8000
=₹1261

Difference= 1261-1240
=₹21

The answer is ₹21


Note:-
The photo attached above is for semi annually

Hope it helps you