Whitney's Cafe uses 2 bags of coffee every day. How many days will 1/2 of a coffee last?

1/2 of a coffee bag will last for 4 days.

That answer is not even logical!!!

in 1 day they use 2 bags
so in 4 days (their answer) they would use 8 bags, not 1/2 bag

2 bags last a day

that is (1 day ./ 2 bags)

(1/2 bag ) * (1 day /2 bags)
= 1/4 day
(or 24 hr /day ) (1/4) day = 6 hours

and "answer ', would you please stop trying to answer mathematics or physics questions ?

it would last a forth of a day