student asking question

Would it be okay to replace "within" with "in" here? What's the difference between these two?

teacher

Native speaker’s answer

Rebecca

It would sound natural, yes! But, the context would change slightly if you used "in" instead of "within." Within is more of an estimate, whereas "in" is more definite. So it would be 10 seconds, as opposed to roughly 10 seconds. Ex: I got home within 10 minutes or so. Ex: The cake was done in half an hour.

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