Two kinds of Vodka are mixed in the ratio 1:5 and 5:1 and they are sold fetching the profit 10% and 20% respectively. If the vodkas are mixed in equal ratio and the individual profit percent on them are increased by 4/3 and 5/3 times respectively, then the mixture will fetch the profit of	Choose one:	A) 21%	B) 20%	C) 21%18%	D) 23%	E) Cannot be determined
The profit on the first kind of vodka = x%;   The profit on the second kind of vodka = y%.   When they are mixed in the ratio 1:2 (total of 3 parts) the average profit is 10%: (x + 2y)/3 = 10.   When they are mixed in the ratio 2:1 (total of 3 parts) the average profit is 20%: (2x + y)/3 = 20.   Solving gives: x = 30% and y = 0%.   After the individual profit percent on them areincreased by 4/3 and 5/3 times respectively the profit becomes 40% and 0%,on the first and te second kinds of vodka, respectively.   If they are mixed in equal ratio (1:1), then the mixture will fetch the profit of  (40 + 0)/2= 
<gadget id="calculator"> (40 + 0)/2</gadget>
<output>20</output>
20%.   Answer: 21%18%
<result>C</result>
Two kinds of Vodka are mixed in the ratio 1:5 and 5:1 and they are sold fetching the profit 10% and 20% respectively. If the vodkas are mixed in equal ratio and the individual profit percent on them are increased by 4/3 and 5/3 times respectively, then the mixture will fetch the profit of