The following figure shows the production of mobiles in lakh units of four cities in different years. Study the figure and answer the question that follows.
What is the ratio between the average production in Delhi and Kolkata during the period of 2019 to 2022?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 11 : 9.
The average production (in lakhs) in Delhi from 2019 to 2022 = (600 + 450 + 350 + 800)/4 = 2200/4 = 550
The average production (in lakhs) in Kolkata from 2019 to 2022 = (500 + 400 + 250 + 650)/4 = 1800/4 = 450
Required ratio = 550 : 450 = 11 : 9
Therefore, the ratio between the average production in Delhi and Kolkata during the period of 2019 to 2022 is 11 : 9.