# 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.

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

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

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%

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

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

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

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