If the normal hours of operation of Jean's business are 4 pm to 10p every day Monday through Friday, and from 6 pm to 10 pm on weekends, how many hours is the business open in a week?
First, we find the number of hours per weekday by subtracting the smaller number time from the larger one, finding 10-4= <<10-4=6>>6 hours per weekday.
As there are 5 weekdays, this means the business is open 6*5=30 hours a week on the weekdays.
Then we find out the amount of time the business is open on a weekend day, using the same process as we did with the weekdays, finding Jean's business is open 10-6= <<10-6=4>>4 hours each weekend day.
Since there are two weekend days, this means they are open 4*2=<<4*2=8>>8 hours on the weekends.
We add these two totals together to find that 30+8= <<30+8=38>>38 hours per week.
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