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Consider the following graphs. The curves in the graphs indicate different age groups in the populations of two countries A and B over a period of few decades: With reference to the above graphs, which of the following are the most logical and rotational inferences that can be made? 1. Over the last two and a half decades, the dependency ratio for country B has decreased. 2. By the end of the next two and a half decades, the dependency ratio of country A and be much less than that of country B. 3. In the next two decades, the work-force relative to its total population will increase in country B as compared to country A. Select the correct answer using the code given below.

Consider the following graphs. The curves in the graphs indicate different age groups in the populations of two countries A and B over a period of few decades: With reference to the above graphs, which of the following are the most logical and rotational inferences that can be made? 1. Over the last two and a half decades, the dependency ratio for country B has decreased. 2. By the end of the next two and a half decades, the dependency ratio of country A and be much less than that of country B. 3. In the next two decades, the work-force relative to its total population will increase in country B as compared to country A. Select the correct answer using the code given below. Correct Answer 1 and 3 only

Concept used :

Dependency ratio is the ratio of the non-working population to the working population. (15 to 64 is working population)

Calculations :

Checking for condition 1 

The dependency ratio of country B has decreased in the last two decades as the population has increased during this period. 

Checking for condition 2 

The dependency ratio of country A is more than the dependency ratio of Country B because the working population of country B has increased more than the working population of country A. 

Checking for condition 3 

We can see through the graph that the working population of country B to the overall population has increased more than the working population of country A to the overall population. 

So both inferences 1 and 3 are the following.

∴ Option 3 is the correct answer.

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