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)
How many times proportion of an Item manufactured has not been changed in the subsequent year?
1. 9
2. 8
3. 7
4. 6
This can be easily computed by observing the bars in the graph:
For item A: 2013 to 2014, 14 to 15 i.e. 2 times
For item B: 2011-12 i.e. 1 time
For item C: 2012-13, 2014-15, 2017-18 i.e 3 times
For item D: 2013-14 i.e. 1 time
Hence, a total of 7 such instances.
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