Direction: Study the following graph to answer these questions.

The bar graph shows the performance of 3 political parties A, B and C in terms of votes acquired in the elections in a constituency during 2008-2012. The following data given in lakhs.

Important for :
By what percent is the average number of votes acquired by B more/less than that of A during 2008-2012?
» Explain it
Average of votes acquired by A

2.1 + 2.5 + 3.05 + 4.1 + 4.15  

= 3.18

Average of votes acquired by B
3.5 + 3.1 + 4 + 3.9 + 3.8  

= 3.66

Required percentage

3.66 – 3.18  

= × 100 = 15%

∴  It is 15% more than A.

Hence, option C is correct.

How many more votes are required by C in 2013 than in 2012 to make the ratio of votes with A, 3 : 2, keeping the votes of A same in 2012?
» Explain it
let the required number of votes be x.

Then,  x + 1.5  =  3
4.15 2

x + 1.5 =  4.15 × 3

x = 6.225 – 1.5 = 4.725 lakh.

Hence, option B is correct.

By what per cent should votes of B increase/decrease in 2012 to equal its average during the previous 4 year?
» Explain it
Average of votes for previous four years

3.5 + 3.1 + 4 + 3.9  =  14.5
4 4

= 3.625

Hence, the number of votes in 2012 are more than average.

Number of votes that should be decreased = 3.8 – 3.625 = 0.175 lakh

Required decrease in percentage

0.175  × 100% = 4.6%

Hence, option D is correct.

In 2011, by what percent should the votes of C increase to exceed the votes of B in the same year by 12%?
» Explain it
112% of votes of C = 112% of 3.9

112 × 3.9  = 4.368

∴  Votes of C must be increased to 4.368

∴  Increased votes = 4.368 – 2.3 = 2.068

Then, required percentage

2.068  × 100% = 89.9%

Hence, option C is correct.

What percent of votes were acquired by B with respect to the total votes acquired by all the three parties in 2009?
» Explain it
Total votes acquired by all three parties

= 3.1 + 2.5 + 1.9 = 7.5

 Required percentage

3.1  × 100% = 41.33%

Hence, option B is correct. helps exam aspirants understand Data Interpretation (DI) sets on solving them with the help of relevant examples. This is the most important chapter of arithmetic section of Quantitative Aptitude. Here on this page, you will get to know about Data Interpretation questions with solutions for Bank PO Exams and SSC Exams, one of the important chapters of Quantitative Aptitude with all the short tricks of Data Interpretation pie chart question and answer, tricks to solve line chart, bar chart, mixed chart, information chart, radar chart, web chart, table chart, set theory  and pie chart, Less time taking approaches to solve Data Interpretation sets, tricks to solve data analysis questions and answers problems, Data Interpretation formulas, Important quantitative aptitude DI tricks video, wherever applied.

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