Bar Diagrams: Exercise-1


Overview:


Questions and Answers Type:MCQ (Multiple Choice Questions).
Main Topic:Data Interpretation.
Data Interpretation Sub-topic:Bar Graph Questions and Answers.
Number of Questions:5 Questions with Solutions.

Directions: In the following bar diagram, the number of history books and geography books sold by six different book sellers in a certain time has been given. Study the bar diagram carefully to answer the questions.


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  1. What is the average number of history books sold by all book sellers taken together?

    1. 20
    2. 22
    3. 24
    4. 26


Answer: (c) 24

Solution: Total number of books sold by all book sellers = 144
Total number of book sellers = 6, then $$ Average = \frac{144}{6} $$ $$ = 24 \ Books $$

  1. By what percent the number of history books sold by book seller E is more than that of book seller D?

    1. 22.22%
    2. 33.33%
    3. 44.44%
    4. 55.55%


Answer: (b) 33.33%

Solution: Required percent, $$ = \frac{20 - 15}{15} \times 100 $$ $$ = \frac{100}{3} = 33.33 \ \% $$

  1. What is the average of the number of geography books sold by book sellers B, C and F together?

    1. 20.7
    2. 25.2
    3. 32.5
    4. 35.3


Answer: (a) 20.7

Solution: Total number of geography books sold by B, C and F together = 62
Number of book sellers = 3 (B, C and F), then $$ Average = \frac{62}{3} $$ $$ = 20.7 \ Books $$

  1. What is the respective ratio between the number of history books sold by book seller D and that of geography books sold by book seller C?

    1. 1:1
    2. 1:2
    3. 2:1
    4. 3:2


Answer: (b) 1:2

Solution: Required ratio, $$ = 15 : 30 $$ $$ = 1 : 2 $$

  1. What is the respective ratio of the numbers of geography books sold by book seller A and book seller D?

    1. 1:3
    2. 2:1
    3. 5:2
    4. 3:5


Answer: (d) 3:5

Solution: Required ratio, $$ = 15 : 25 $$ $$ = 3 : 5 $$