Question : The line chart given below shows the population of two states A and B in 5 years.
What is the difference between the average population of A and B in all the years?
Option 1: 30
Option 2: 40
Option 3: 50
Option 4: 60
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Correct Answer: 50
Solution :
Average population of A = $\frac{500+700+550+400+300}{5}= \frac{2450}{5}= 490$
Average population of B = $\frac{800+600+450+350+500}{5}=\frac{2700}{5}= 540$
Difference between the average population of A and B in all the years
= 540 – 490
= 50
Hence, the correct answer is 50.
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