Question

find amount and compound for ₹1800 for 2 year at 10% per annum compounded annualy

Answer 1

p= 1800 t=2 yr r= 10%
amount= p(1+r/100)t
1800(1+10/100)t
1800*11/10*11/10
2178
c=amount-principle
c= 2178-1800
c=
378

Answer 2

P=1800
T=1 year
R=10%

1800 x 1 x 20 / 100
=360

1800+360=2160
this 2160 is our now" P" (principle)

time "T" and rate of interest "R" are same

2160 x 1 x 10 / 100
=216

2160 + 216= 2376

this is the amount ie 2376.
the principle =2376 - 1800 = 576