The following Bar-Chart gives the production of cars by three different companies X, Y and Z in different years:
Consider the production of each company separately. In how many instances was the percentage increase in production of cars over the previous year’s production greater than 20% ?
5
From the bar graph,
For Car X,
Production increases of car x from 2014 to 2015 = 100/300 × 100 = 33.33%
Production increases of car x from 2015 to 2016 = 100/400 × 100 = 25%
Production increases of car x from 2016 to 2017 = 100/500 × 100 = 20%
Production increases of car x from 2017 to 2018 = 100/600 × 100 = 16.66%
For Car Y,
Production increases of car Y from 2014 to 2015 = 100/200 × 100 = 50%
Production increases of car Y from 2015 to 2016 = 100/300 × 100 = 33.33%
Production increases of car Y from 2016 to 2017 = 100/400 × 100 = 25%
Production increases of car Y from 2017 to 2018 = No change
For Car Z,
Production increases of car Z from 2014 to 2015 = No change
Production increases of car Z from 2015 to 2016 = 100/500 × 100 = 20%
Production increases of car Z from 2016 to 2017 = 100/600 × 100 = 16.66%
Production increases of car Z from 2017 to 2018 = 100/700 × 100 = 14.28%
The percentage increase in production of cars over the previous year’s production greater than 20% = 2 times for Car X + 3 times for Car Y = 5 Instances.
∴ The correct answer is 5.
Study the given graph carefully and answer the question that follows.

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