Study the given graph and answer the question that follows. 

The graph presents the total production of crops (in metric tonnes) in six different states/UTs of the country in the years 2021 and 2022.

In which pair of states/UTs is the ratio of total crop production for both the years 1 : 2?

Given: 

Concept used:

Count total crop production for both the years for each state. Calculate ratio for answer.

Calculation:

Total production of crops in Uttar Pradesh in the years 2021 and 2022 = 559 + 637 = 1196

Total production of crops in Madhya Pradesh in the years 2021 and 2022 = 534 + 645 = 1179

Total production of crops in Andhra Pradesh in the years 2021 and 2022 = 398 + 594 = 992

Total production of crops in Bihar in the years 2021 and 2022 = 589 + 546 = 1135

Total production of crops in West Bengal in the years 2021 and 2022 = 436 + 354 = 790

Total production of crops in Delhi in the years 2021 and 2022 = 245 + 251 = 496

Now calculate Ratios,

Option 1: Ratio of total crop production for both the years of Delhi and Uttar Pradesh = \({496\over 1196}= {31\over74 }\)

Option 2: Ratio of total crop production for both the years of West Bengal and Andhra Pradesh =\({790\over 992}={395\over 496}\) 

Option 3: Ratio of total crop production for both the years of Delhi and Andhra Pradesh = \({496\over 992}={1\over 2}\)

Option 4: Ratio of total crop production for both the years of West Bengal and Madhya Pradesh = \({790\over 1179}\)

Here, Delhi and Andhra Pradesh pair of states/UTs is the ratio of total crop production for both the years 1 : 2.

Hence, 'option 3' is the correct answer.