Bar Diagram 21

Directions:- (1-4)The following line graph gives the percentage of the number of candidates who qualified an examination out of the total number of candidates who appeared for the examination over a period of seven years from 2003 to 2009.
Percentage of Candidates Qualified to Appeared in an Examination 
Over the Years

Q1. If the number of students appeared in the examination in 2004 and 2005 were in the ratio 2 : 3, then find the ratio of qualified students from these years?

        (1) 2: 3                                          (2) 5: 6                                  (3) 4: 5

        (4) 5:9                                           (5) None of these

Q2. If the number of candidates qualified in 2007 was 5800, what was the number of candidates appeared in 2007?

        (1) 7520                                        (2) 7250                                (3) 7500

        (4) 72500                                      (5) cannot be determined

Q3. If the total number of candidates appeared in 2005 and 2006 together was 42400, then the total number of candidates qualified in these two years together was?

        (1) 34700                                      (2) 32100                      (3) 31500

        (4) 35200                                      (5) Data inadequate

Q4. The total number of candidates qualified in 2008 and 2009 together was 6600 and the number of candidates appeared in 2008 was 5100. What was the number of candidates appeared in 2009?

        (1) 4000             (2) 4850                 (3) 4200

      (4) 4150                              (5) None of these

Answer & Explanation

  1. (4)

Required ratio = 50% of 2 : 60% of 3 = 5 : 9.

  1.  (2)

Required number = 5800/0.8 = 7250

  1.  (5)

Since we don’t know the number of candidates appeared in 2005 and 2006 individually, we cannot find the number of qualified candidates.

  1.  (3)

Let the number of candidates appeared in 2009 was x. Then

80% of 5100 + 60% of x = 6600

x = 4200

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