A shopkeeper purchased 85 kg of potatoes for Rs. 1105 and sold the whole lot at the rate of Rs. 15 per kg. What will be his gain percent?  Choose the correct choice from the following answers.
A) 18 1/9 %
B) 16 9/3 %
C) 14 1/3 %
D) 12 1/3 %
E) 15 5/13 %
C.P. of 1 kg = 1105/85 = Rs. 13
S.P. of 1 kg = Rs. 15
Gain % = 2/13 * 100 = 200/13 = 15 5/13 %
Answer: 15 5/13 %
<result>E</result>
A shopkeeper purchased 85 kg of potatoes for Rs. 1105 and sold the whole lot at the rate of Rs. 15 per kg. What will be his gain percent?