Two kinds of Vodka are mixed in the ratio 1:2 and 2:1 and they are sold fetching the profit 10% and 35% 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 Answers
A) 18 %  B) 20 %  C) 21 %  D) 35 %  E) can not be determined

Rationale: answer : d .
Answer: D