An article is bought for Rs.900 and sold for Rs.1000, find the gain percent?  Select:
A) 11 2/5%	B) 11 2/9%	C) 11 1/9%	D) 11 2/3%	E) 11 3/3%
900 ---- 100   100 ---- ? =&gt; 11 1/9%   Answer: 11 1/9%
<result>C</result>
An article is bought for Rs.900 and sold for Rs.1000, find the gain percent?