Question : Study the given graph and answer the question that follows.
The average production of fertilisers by country Z in 2017, 2018 and 2020 is what percentage more than the average production of fertilisers by country X in 2018 and 2020?
Option 1: 48%
Option 2: 32.4%
Option 3: 49.6%
Option 4: 45%
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Correct Answer: 48%
Solution :
The average production of fertilisers by country Z in 2017, 2018 and 2020
= $\frac{330+360+420}{3}$
= $\frac{1110}{3}$
= $370$
The average production of fertilisers by country X in 2018 and 2020
= $\frac{240+260}{2}$
= $\frac{500}{2}$
= $250$
Required percentage = $\frac{370-250}{250}\times100=\frac{120}{250}\times 100= 48\%$
Hence, the correct answer is 48%.
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