Question : The bar chart given below shows the annual production (in 1000 tonnes) of coffee of a country for the years 2018 to 2022.
What is the average production (in 1000 tonnes) of coffee for the years 2018, 2019, and 2020?
Option 1: 530
Option 2: 810
Option 3: 720
Option 4: 640
Correct Answer: 640
Solution :
Production of coffee in 2018 = 700 (in 1000 tonnes)
Production of coffee in 2019 = 550 (in 1000 tonnes)
Production of coffee in 2020 = 670 (in 1000 tonnes)
Average = $\frac{\text{Sum of yearly production}}{{\text{Total number of years}}}$
= $\frac{700+550+670}{3}$
= $\frac{1920}{3}$
= $640$
Hence, the correct answer is 640.
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