Question

Find the difference between copound interest and simple interest on a sum of 64000Rs at the rate of 20%p.a. compounded semi-annually for 1and half years.

Answer 1

Sorry bro iam in class 7 or i don't known compound interest

Answer 2

p= 64000, n=2, r= 20, t=1 and half year = 3/2

         A=P{1+(r/100n)}^(nt)

substitute the values

     A=85,184

C.I=A-P

C.I = 85184 - 64000

C.I = 21,184

P=64000, n= 3/2, r=20

        S.I = Pnr/100

substitute the values

S.I = 19,200

C.I - S.I =21,184 -19200 = 1984