So a trim lasts 1/4 60=15 minutes and a style lasts 1/6 60=10 minutes. If we add these together, 15+10=25 minutes that is how long each customer takes. In one day she works for 3 1/3 60=200 minutes in total, so can fit in 200/25=8 appointments per day. So in 5 days she can have 8 5=40 total appointments each week.
The hairstylist takes 12 5 hour per customer, equating to 25 minutes. Working 200 minutes a day allows for 8 appointments, resulting in 40 appointments over 5 days. Thus, the hairstylist can schedule 40 appointments each week.
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