Problem Statement

Percentage Rise in C's July Votes to Flip the D to C Ratio to 5 : 9 Direction: Study the following line graph carefully to answer the question that follows. Opinion polls were conducted about the popularity of four IT companies (A, B, C and D) in alternate months. All the people who participated in the opinion poll each month cast their vote in favour of exactly one of the four companies. The results (in lakhs of votes) are shown by the line graph, whose readings are: A: Jan 1.5, Mar 1, May 1, July 1.5, Sept 2, Nov 2 B: Jan 2.5, Mar 3, May 1, July 1, Sept 2, Nov 2 C: Jan 3, Mar 2, May 2.5, July 2.5, Sept 3.5, Nov 4 D: Jan 4, Mar 4, May 3.5, July 4.5, Sept 4.5, Nov 4 In the month of July, the votes for D and C are in the ratio 9 : 5. By what percentage must the votes for C increase so that the ratio of D to C becomes 5 : 9, assuming the votes for D remain the same?