Question

calculate the compound interest on ruppes 100 at the rate of 10%per annum for 2 years

Answer 1

the answer is 100(110^2)/10000
the answer is 121
then compound interest is 21

Answer 2

A= P (1+r/100)power n

A = 100 (1+10/100)power 2
A= 100×11/10 ×11/10
A= 121
C.I.=A-P
C.I = 121-100
C.I.=21