Question

Find the compound interest on Rs. 1000 at the rate of 20% per annum for 18 month when interest is compounded half yearly.
A.Rs. 331
B.Rs. 1331
C.Rs. 320
D.Rs. 325

Answer 1

1000*(110/100)^3
1000*11/10*11/10*11/10
11*11*11=1331
note:20% per annum means 10% per 6 months