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Bar Graph

Bar Graph - Important Points


11.

Study the below Bar Graph-3 and answer the questions:

If the total number of students in the University in the year 2007 was 455030, then, the total number of students who opted for the given three subjects were approximately what percent of the total students?

A. 19

B. 9

C. 12

D. 5

Discuss Work Space

Answer: option b

Explanation:

Required percentage = ((15+30)×1000) / 455030 × 100 = 40000 / 455030 × 100 ≈ 9


12.

Study the Bar Graph-3 carefully to answer the question:

What is the total number of students who opted for Hindi and who opted for Geography in the years 2006, 2007 and 2009 together? 

A. 97000

B. 93000

C. 85000

D. 95000

Discuss Work Space

Answer: option d

Explanation:

Required number of students = (5 + 35 + 15 + 15 + 20 + 5) x 1000 = 95 x 1000 = 95000


13.

Study the Bar Graph-3 carefully to answer the question:

The total number of students who opted for Geography in the years 2005 and 2008 together are approximately what percent of the total number of students who opted for all three subjects in the same years? 

A. 38

B. 28

C. 42

D. 32

Discuss Work Space

Answer: option d

Explanation:

Required percentage 
= [((15+30) × 1000)/({(5 + 35 + 15) + (25+30+30)} × 1000)] × 100
= (((15+30)) / ((55+85) )) × 100 = 45/140 × 100 ≈ 32


14.

Study the Bar Graph-3 carefully to answer the question:

What is the respective ratio between the number of students who opted for Sociology in the years 2006 and 2008 together and the number of students who opted for History in the year 2005 and 2009 together? 

A. 11 : 5

B. 12 : 7

C. 11 : 7

D. 12 : 5

Discuss Work Space

Answer: option a

Explanation:

Required ratio = (25 + 30) : (5+20) = 55 : 25 = 11 : 5


15.

Study the Bar Graph-3 carefully to answer the question:

Out of the total number of students who opted for the given three subjects, in the year 2009, 38% were girls. How many boys opted for Geography in the same year? 

A. 1322

B. 1332

C. 1312

D. Cannot be determined

Discuss Work Space

Answer: option d

Explanation:

Number of students who opted for all three subjects in 2009 = (20 + 20 + 5) thousands = 45000 
Number of boys = (45000 × 62) / 100 = 27900
Since, we do not know the number of girls in Mathematics, number of boys opted for Mathematics cannot be determined.