A producer of tea blends two varieties of tea from two tea gardens one costing Rs 18 per kg and another Rs 20 per kg in the ratio 5 : 3. If he sells the blended variety at Rs 20 per kg, then his gain percent is	Select:
A) 7%	B) 13%	C) 14%	D) 15%	E) 16%
Explanation:   Suppose he bought 5 kg and 3 kg of tea.   Cost Price = Rs. (5 x 18 + 3 x 20) = Rs. 150.   Selling price = Rs. (8 x 20) = Rs. 160.   Profit = 160 - 150= 
<gadget id="calculator">160 - 150</gadget>
<output>10</output>
10   So, Profit %= (10/150) * 100 = 7%   Option 7%
<result>A</result>
A producer of tea blends two varieties of tea from two tea gardens one costing Rs 18 per kg and another Rs 20 per kg in the ratio 5 : 3. If he sells the blended variety at Rs 20 per kg, then his gain percent is