[denydenydeny]

*hits head against wall*

is saying that America ranks 29th in the world for life expectancy, that being 50. Which isn't the case.

The sentence says "life expectancy at age 50." In other words, life expectancy from 50 on.

I give up.

[gogogodzilla]

Ah. I see.

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Probably would have got it in one had they actually written: “ranks 29th in the world for life expectancy from age 50” instead of “...life expectancy to age 50.”