What are some examples of real-world ratios?

Answer 1

For example, the percentage of a population that has a certain trait can usually be expressed as a ratio, as in "50% of smokers die prematurely, as a result of smoking". I am not sure of the exact ratio in this case, but it's somewhere close. In any case, this percentage would be equivalent to one premature death for every 2 smokers.Other examples:
* About 50% of all babies born are boys - for every boy born, one girl is born (ratio 1:1).

* In a certain place, 33% of all days are rainy: for every 3 days, 1 is rainy; or: for every rainy day, there are 2 sunny days.

Answer 2

The ratio of males to females in a country or region.The ratio of national debt to gross domestic product (GDP).