Question
The given bar graph shows the export of jute by a
company over the years 2011 to 2017. Which of the following pairs of years has the maximum percentage of decrease in export?Solution
To find the difference in each pair of years, 2011 - 2012 = 11.4 - 10.8 = 0.6 2012 - 2013 = 9.5 - 11.4 = - 1.9 2013 - 2014 = 9.9 - 9.5 = 0.4 2014 - 2015 = 7.8 - 9.9 = - 2.1 2015 - 2016 = 5.2 - 7.8 = - 2.6 2016 - 2017 = 6.5 - 5.2 = 1.3 Percentage Decrease = (Old Value - New Value)/Old Value x 100 From the above, we know that there was a decrease in export in the years 2012 - 2013, 2014 - 2015 and 2015 - 2016. In all these years, 2015 - 2016 has the maximum amount of decrease = -2.6/5.2 x 100 = 50% ∴ The maximum percentage of decrease in export was in the year 2015 - 2016.
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