Bar graph: ratio of the sum of two values to the sum of others

This type of question, asked 2 times: 29 Jan 2022 Tier II, 3 Feb 2022 Tier II. All 2 questions below, oldest first.

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Question 1
29 Jan 2022 Tier II
34 $Study the given graph and answer the question that follows. Production of fertilisers by countries X, Y and Z from 2016 to 2020 (in million tonnes) What is the ratio of the total production of fertilisers by country X in 2017 and country Y in 2020 to the production of fertilisers by country Z in 2019?$
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Question 2
3 Feb 2022 Tier II
39 $Study the given graph and answer the question that follows. The ratio of the total production of cement by company A in 2016 and company C in 2018 to the total production of cement by company B in 2017 and 2019 is:$
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Question 1