Question 1169658
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After reading your post,  it is  UNCLEAR  to me,


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    who do not have cavities: these 70 children or that x children ?
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You may answer me : &nbsp;&nbsp;guess it on your own.


But I don't want to guess: &nbsp;It is &nbsp;Math, &nbsp;and I want to &nbsp;<U>KNOW</U> &nbsp;/ (to see) &nbsp;it from the text - not from the context.



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Honestly, &nbsp;my position is this:


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    If you are not able to formulate your problem accurately,
    then there is no sense to solve it for you, because you do not understand the subject.
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