I want to say
One of ten people in the world suffers mental disorder.
My attempt but incomplete is as follows,
世界のなかに「。。。。」が精神障害に苦しんでいます。
How to say "One of ten people" in Japanese?
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Sign up to join this communityYou can say
[10人]{じゅうにん}に[1人]{ひとり}
(「X人にY人」= "Y out of X people" / "Y in every X people")
so
One of ten people in the world suffers mental disorder.
would be like
世界では10人に1人が精神障害に苦しんでいます。or
世界の10人に1人が精神障害に苦しんでいます。
You could also use
10人[中]{ちゅう}1人
10人のうち1人
(「X人中Y人」/「X人のうちY人」 = "Y of X people")
as in
世界では10人中1人が精神障害に苦しんでいます。or
世界では10人のうち1人が精神障害に苦しんでいます。