A sum of money is put out at compound interest for 2 years at 20%. It would fetch Rs.964 more if the interest were payable half-yearly, then it were pay able yearly. Find the sum.  Choose the correct choice from the following options:	A) 22200	B) 31897	C) 38799	D) 40000	E) 42782
P(11/10)^4 - P(6/5)^2 = 964   P = 40000   Answer: 40000
<result>D</result>
A sum of money is put out at compound interest for 2 years at 20%. It would fetch Rs.964 more if the interest were payable half-yearly, then it were pay able yearly. Find the sum.