What Is The Difference Between The USA And India?

There is not enough information given in this question to draw any definite conclusions about the ratio. Let's see what we can do. We know that the Indian population tends to be much younger than the American population, and hence the ratio of teenagers will be greater than $\frac{ 1210}{ 309} = 4$ . This leaves the options of $5:1$ and $6:1$ .

Let's further think of the ratio as $\frac{ \text{ \% Indian that are 13 - 19 } \times 1210 } { \text{ \% Americans that are 13 - 19 } \times 309}$ , then the other important aspect to consider is $\frac{ \text{ \% of Indians that are 13-19} } { \text{ \% of American that are 13 - 19} }$ . Given that India is a developing country and America is a very developed country, I'm inclined to believe that this ratio is much greater than 1, and as such would choose $6: 1$ , out of the given options .

In the question How Would You Estimate The Number Of American Teens , we see that the estimate is 28.5 million. In the question How Would You Estimate The Number Of Indian Teens , we see that the estimate is 170 million. Hence, the ratio is $\frac{170}{28.5} = 5.96$ .

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