A sum of money is put out at compound interest for 2 years at 20%. It would fetch Rs.723 more if the interest were payable half-yearly, then it were pay able yearly. Find the sum.	Select:	A) 22200	B) 21897	C) 28799	D) 30000	E) 32782
P(11/10)^4 - P(6/5)^2 = 723   P = 30000   Answer: 30000
<result>D</result>
A sum of money is put out at compound interest for 2 years at 20%. It would fetch Rs.723 more if the interest were payable half-yearly, then it were pay able yearly. Find the sum.