question_answer

In an election survey, 30% people promised to vote candidate A and remaining promised to vote for candidate B. If on the day of election x% percent of people who promised to vote for A, voted for B and 40% of people who promised to vote B voted against him and in the end B lost by 10 votes. What is value of x, if total 250 votes were there?  

A) 20

B) 30

C) 50

D) 70

E) None of these