A sum of money deposited at C.I. amounts to Rs.1820 in 4 years and to Rs.2402 in 5 years. Find the rate percent?  Options
A) 30%	B) 31%	C) 34%	D) 19%	E) 50%
1820 --- 582   100 --- ? =&gt; 31%   Answer: 31%
<result>B</result>
A sum of money deposited at C.I. amounts to Rs.1820 in 4 years and to Rs.2402 in 5 years. Find the rate percent?