Question 1135853
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If restaurant works 7 days a week, then Ely Santos works {{30/7}}} hours per day, in average.


If restaurant works n days a week, then Ely Santos works {{30/n}}} hours per day, in average.


The problem does not have much sense (if any) until it says how many days per week the restaurant works.
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Let me say more: the post is not a Math problem at all, until it says explicitly and directly how many days per week the restaurant works.