Answer the following questions with the given information and the graph:
Alpha company uses Rex as main raw material for manufacturing Item A, Item B, Item C and Item D.
The graph below shows the proportion of items produced and price trend of Rex. Annual Res_Index of an item in a given year is measured as follows:
Res_Index of Item A in Year 2013 = Absolute Value (Production of Item A in 2013 - Production of Item A in 2012) / Absolute Value (Rex Price in 2013 - Rex Price in 2012)
In which year, Rex Price had highest percentage increase?
1. 2015
2. 2016
3. 2017
4. 2018
The prices in the respective years are:
2015 : 51
2016 : 62.5
2017 : 74
2018 : 62.5
The percentage increase in 2016 = (11.5/51)*100
The percentage increase in 2017 = (11.5/62.5)*100
Obviously, the answer becomes 2016
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