A sum of money invested at C.I. amounts to Rs. 800 in 3 years to Rs. 890 in 4 years. The rate of interest per annum is?
Pick:	A) 2 1/2 %	B) 4%	C) 5%	D) 6 2/3 %	E) 11 1/4%
S.I. on Rs. 800 for 1 year = (890 - 800) = Rs.90 Rate = (100 * 90)/(800 * 1) = 11 1/4%   ANSW11 1/4%R:11 1/4%
<result>E</result>
A sum of money invested at C.I. amounts to Rs. 800 in 3 years to Rs. 890 in 4 years. The rate of interest per annum is?