The difference between the compound interest compounded annually and simple interest for 2 years at 20% per annum is Rs.144. Find the principal?  Choose one.
A) 3627  B) 3622  C) 3600  D) 3618  E) 3620
P = 144(100/5)2   =&gt; P = 3600   Answer: 3600
<result>C</result>
The difference between the compound interest compounded annually and simple interest for 2 years at 20% per annum is Rs.144. Find the principal?