I would like some guidance on how to ask questions with "how many" in them. For example, does one say
From how many minutes is the train late?
or simply
How many minutes is the train late?
or something else?
Similarly, is it
From how many kilos does she slim ?
or something else?
Best Answer
would be ok. From is incorrect in this question.
I'm not sure slim can be measured like this. Your best bet will be How slim is she?
Generally, you'll be just putting how in front of the question and changing word order accordingly to make your sentence a question.
If there's a preposition somewhere in the statement and it is connected with many or the noun, you'll want to move it toward the end.
How many people have you heard this rumor from?
Notice how from is separated from many people and put in the end of question. Strictly speaking, From how many people have you heard this rumor? is also ok grammatically, but in my opinion it is a little more awkward.