The corrective and the suitable answer from the passages is that it showing the Sarah expenses on the weekly basis .
The weekly expenses were made on weekly basis and it shows what all the expenses which were doing for the household expenses, while maintaining the weekly expenses the person should do the calculation too to know about the expenses and the saving .
There were mainly few types of expenses like variable which occurs on day to day basis for the necessary needs , the second one is fixed expenses which cannot be changes like insurance expenses , school fees etc.
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