The following line graph gives the percentage of the number of candidates who qualified for an examination out of the total number of candidates who appeared for the examination over a period of seven years from 1994 to 2000.
Percentage of Candidates who Qualified to Appeared in an Examination Over the Years
If the total number of candidates who appeared in 1996 and 1997 together was 47400, then the total number of candidates who qualified in these two years together was?
34700
32100
31500
Data inadequate
Correct answer is D
The total number of candidates who qualified in 1996 and 1997 together, cannot be determined until we know at least, the number of candidates who appeared in any one of the two years 1996 or 1997 or the percentage of candidates who qualified to candidates who appeared in 1996 and 1997 together.
Hence, the data is inadequate.