Discussion
For which crop and in which year was the percentage increase in production from the previous year the highest?
Answer: A
Correct answer: Wheat in 2018
Each option needs its increase measured against the previous year, then expressed as a percentage of that previous year.
Wheat in 2018: from 40 to 60, so \(\tfrac{20}{40}\times 100 = 50\%\).
Rice in 2017: from 30 to 40, so \(\tfrac{10}{30}\times 100 = 33.33\%\).
Maize in 2019: from 50 to 55, so \(\tfrac{5}{50}\times 100 = 10\%\).
Wheat in 2020: from 65 to 70, so \(\tfrac{5}{65}\times 100 = 7.69\%\).
Wheat in 2018 is the largest at 50%. Note that it also has the largest absolute rise, 20 lakh tonnes, but that is coincidence - percentage growth depends on the base, which is why the smaller 2017 Rice rise of 10 still outranks the equal-sized 2019 Maize and 2020 Wheat rises of 5.
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