A man gets a simple interest of Rs.400 on a certain principal at the rate of 5% p.a in eight years. Find the compound interest the man will get on twice the principal in two years at the same rate? Choices:	A) s.256.27	B) s.256.29	C) s.205.00	D) s.256.22	E) s.256.25
Let the principal be Rs.P   S.I at 5% p.a in 8 years on Rs.P = Rs.400   (P)(8)(5)/100 = 400   P = 1000   s.205.00.I on Rs.2P i.e., Rs.2000 at 5% p.a in two years   =2000{ [1 + 5/100]^2 - 1} =   = 2000(41/ 400)   = Rs.205   Answer:s.205.00
<result>C</result>
A man gets a simple interest of Rs.400 on a certain principal at the rate of 5% p.a in eight years. Find the compound interest the man will get on twice the principal in two years at the same rate?