The negation is: not arrive more than 5 minutes; so either exactly 5 minutes or less. I think he only wrote less for the sake of the example and being concise, but he did mention both possibilities.

very interested!

Conditional Claim: If one drinks coffee in the morning, then one has energy for the day.

Contrapositive: If one does not have energy for the day, then one did not drink coffee in the morning.

-drinking coffee in the morning is sufficient for having energy for the day.

-having energy for the day is necessary for drinking coffee in the morning.

If one is hungry, then one will make a sandwich.

Kate is hungry.

Conc: Kate will make a sandwich.

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im interested!!

I'm Interested!!