A shopkeeper purchased 70 kg of potatoes for Rs. 420 and sold the whole lot at the rate of Rs. 6.50 per kg. What will be his gain percent?	Pick
A) 8 1/9 %
B) 8 7/3 %
C) 8 1/3 %
D) 2 1/3 %
E) 8 3/3 %
C.P. of 1 kg = 420/7 = Rs. 6   S.P. of 1 kg = Rs. 6.50   Gain % = 0.50/6 * 100 = 25/3 = 8 1/3 %.Answer: 8 1/3 %
<result>C</result>
A shopkeeper purchased 70 kg of potatoes for Rs. 420 and sold the whole lot at the rate of Rs. 6.50 per kg. What will be his gain percent?