A shopkeeper purchased 77 kg of potatoes for Rs. 539 and sold the whole lot at the rate of Rs. 8.50 per kg. What will be his gain percent? Choices:
A) 18 1/9 % B) 28 9/3 % C) 28 1/3 % D) 32 1/3 % E) 21 3/7 %
C.P. of 1 kg = 539/77 = Rs. 7
S.P. of 1 kg = Rs. 8.50
Gain % = 1.50/7 * 100 = 150/7 = 21 3/7 %
Answer: 21 3/7 %
<result>E</result>
A shopkeeper purchased 77 kg of potatoes for Rs. 539 and sold the whole lot at the rate of Rs. 8.50 per kg. What will be his gain percent?