Question : The following bar graph shows the milk production (in million tons) details for 4 years for three brands (P, Q, R):
What was the average production of milk (in million tons) per year over the period of 4 years?
Option 1: 90
Option 2: 50
Option 3: 30
Option 4: 70
Correct Answer: 90
Solution :
From the given bar graph,
Milk production in the year 2016 = 40 + 50 + 30 = 120
Milk production in the year 2017 = 20 + 25 + 30 = 75
Milk production in the year 2018 = 40 + 30 + 20 = 90
Milk production in the year 2019 = 20 + 30 + 25 = 75
⇒ Average production over 4 years = $\frac{120 + 75 + 90 + 75}{4}$
= $\frac{360}{4}$
= $90$
Hence, the correct answer is 90.
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