To cover 7 chapters, the teacher will need 42 school days based on the given information.
To solve this problem, we can set up a proportion based on the given information.
Since the teacher needs 6 school days to cover 1 chapter, we can say 1 chapter requires 6 days.
Therefore, for 7 chapters, the teacher will need 7 x 6 = 42 school days to cover them all.
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