What is the difference between the compound interest on Rs.12000 at 20% p.a. for one year when compounded yearly and half yearly? Choose one:
A) 337
B) 120
C) 266
D) 287
E) 612
When compounded annually, interest   = 12000[1 + 20/100]1 - 12000 = Rs.2400   When compounded semi-annually, interest   = 12000[1 + 10/100]2 - 12000 = Rs.2520   Required difference = 2520 - 2400 = Rs.120   Answer:120
<result>B</result>
What is the difference between the compound interest on Rs.12000 at 20% p.a. for one year when compounded yearly and half yearly?