Question

Find the compound interest on $1000 at 20%pa for 18 months compounded half yearly.

Answer 1

AMOUNT=P (1+R/2/100)^2N
1000 (1+20/2/100)^2 (3/2)
1000 (1+10/100)^3
1000 (1+1/10)^3
1000 (11/10)^3
1000 (1331/1000)
1331.
AMOUNT=C.I+PRINCIPAL
1331=C.I+1000
C.I=331.