Solve what? The given information is not clear. No question to answer was presented.
Is the given information expected to be like this?
COUNTRY TRACTORS(as millions) CITITZENS(as what? millions?)
U. S. 4.6 ?
Germany 1 38
Brazil 1 201
Your given data is not adequate.
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I saw your added note. Still inadequate information. PUT THE DATA HERE! Just how do you expect to arrange those additional ratio data?