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Study the following graph for 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 2012- 2016
Question 148
By what per cent should votes of B increase/decrease in 2016 to equal its average during the previous 4 years ?
Solution
B's total in the first four years would be 3.5+3.1+4+3.9 = 15.5
Giving B's average in the first four years to be $$\frac{14.5}{4}=3.875$$
B's votes in 2016 were 3.8,so B would have needed 0.175 lakh less votes
Which would be $$\frac{0.175}{3.8}\times\ 100\ =\ 4.6\%$$ less than what B got
Therefore, Option D is the correct answer.Â
